diff --git a/app/src/MainWindow.cpp b/app/src/MainWindow.cpp
index 80c94f6..09f7870 100644
--- a/app/src/MainWindow.cpp
+++ b/app/src/MainWindow.cpp
@@ -202,8 +202,8 @@ MainWindow::MainWindow(QWidget *parent)
     // /////////// //
 
     // Controllers / controllers connections
-    connect(&sqpApp->timeController(), SIGNAL(timeUpdated(SqpDateTime)),
-            &sqpApp->variableController(), SLOT(onDateTimeOnSelection(SqpDateTime)));
+    connect(&sqpApp->timeController(), SIGNAL(timeUpdated(SqpRange)), &sqpApp->variableController(),
+            SLOT(onDateTimeOnSelection(SqpRange)));
 
     // Widgets / controllers connections
 
@@ -212,8 +212,8 @@ MainWindow::MainWindow(QWidget *parent)
             m_Ui->dataSourceWidget, SLOT(addDataSource(DataSourceItem *)));
 
     // Time
-    connect(timeWidget, SIGNAL(timeUpdated(SqpDateTime)), &sqpApp->timeController(),
-            SLOT(onTimeToUpdate(SqpDateTime)));
+    connect(timeWidget, SIGNAL(timeUpdated(SqpRange)), &sqpApp->timeController(),
+            SLOT(onTimeToUpdate(SqpRange)));
 
     // Visualization
     connect(&sqpApp->visualizationController(),
@@ -221,8 +221,8 @@ MainWindow::MainWindow(QWidget *parent)
             SLOT(onVariableAboutToBeDeleted(std::shared_ptr<Variable>)));
 
     connect(&sqpApp->visualizationController(),
-            SIGNAL(rangeChanged(std::shared_ptr<Variable>, const SqpDateTime &)), m_Ui->view,
-            SLOT(onRangeChanged(std::shared_ptr<Variable>, const SqpDateTime &)));
+            SIGNAL(rangeChanged(std::shared_ptr<Variable>, const SqpRange &)), m_Ui->view,
+            SLOT(onRangeChanged(std::shared_ptr<Variable>, const SqpRange &)));
 
     // Widgets / widgets connections
 
diff --git a/core/include/Data/DataProviderParameters.h b/core/include/Data/DataProviderParameters.h
index 1ffc96b..3a6c0de 100644
--- a/core/include/Data/DataProviderParameters.h
+++ b/core/include/Data/DataProviderParameters.h
@@ -1,7 +1,7 @@
 #ifndef SCIQLOP_DATAPROVIDERPARAMETERS_H
 #define SCIQLOP_DATAPROVIDERPARAMETERS_H
 
-#include "SqpDateTime.h"
+#include "SqpRange.h"
 
 /**
  * @brief The DataProviderParameters struct holds the information needed to retrieve data from a
@@ -10,7 +10,7 @@
  */
 struct DataProviderParameters {
     /// Times for which retrieve data
-    QVector<SqpDateTime> m_Times;
+    QVector<SqpRange> m_Times;
     /// Extra data that can be used by the provider to retrieve data
     QVariantHash m_Data;
 };
diff --git a/core/include/Data/IDataProvider.h b/core/include/Data/IDataProvider.h
index 0648402..a819162 100644
--- a/core/include/Data/IDataProvider.h
+++ b/core/include/Data/IDataProvider.h
@@ -10,7 +10,7 @@
 
 #include <Common/MetaTypes.h>
 
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 #include <functional>
 
@@ -49,7 +49,7 @@ signals:
      * identified by identifier
      */
     void dataProvided(QUuid identifier, std::shared_ptr<IDataSeries> dateSerie,
-                      const SqpDateTime &dateTime);
+                      const SqpRange &dateTime);
 
     /**
         * @brief dataProvided send dataSeries under dateTime and that corresponds of the data
diff --git a/core/include/Time/TimeController.h b/core/include/Time/TimeController.h
index 9c6d7b0..6f1f1fb 100644
--- a/core/include/Time/TimeController.h
+++ b/core/include/Time/TimeController.h
@@ -3,7 +3,7 @@
 
 #include "CoreGlobal.h"
 
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 #include <QLoggingCategory>
 #include <QObject>
@@ -21,15 +21,15 @@ class SCIQLOP_CORE_EXPORT TimeController : public QObject {
 public:
     explicit TimeController(QObject *parent = 0);
 
-    SqpDateTime dateTime() const noexcept;
+    SqpRange dateTime() const noexcept;
 
 signals:
     /// Signal emitted to notify that time parameters has beed updated
-    void timeUpdated(SqpDateTime time);
+    void timeUpdated(SqpRange time);
 
 public slots:
     /// Slot called when a new dateTime has been defined.
-    void onTimeToUpdate(SqpDateTime dateTime);
+    void onTimeToUpdate(SqpRange dateTime);
 
     /// Slot called when the dateTime has to be notified. Call timeUpdated signal
     void onTimeNotify();
diff --git a/core/include/Variable/Variable.h b/core/include/Variable/Variable.h
index cbdb30f..dcea562 100644
--- a/core/include/Variable/Variable.h
+++ b/core/include/Variable/Variable.h
@@ -3,7 +3,7 @@
 
 #include "CoreGlobal.h"
 
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 #include <QLoggingCategory>
 #include <QObject>
@@ -24,21 +24,21 @@ class SCIQLOP_CORE_EXPORT Variable : public QObject {
     Q_OBJECT
 
 public:
-    explicit Variable(const QString &name, const SqpDateTime &dateTime,
+    explicit Variable(const QString &name, const SqpRange &dateTime,
                       const QVariantHash &metadata = {});
 
     QString name() const noexcept;
-    SqpDateTime dateTime() const noexcept;
-    void setDateTime(const SqpDateTime &dateTime) noexcept;
+    SqpRange dateTime() const noexcept;
+    void setDateTime(const SqpRange &dateTime) noexcept;
 
     /// @return the data of the variable, nullptr if there is no data
     IDataSeries *dataSeries() const noexcept;
 
     QVariantHash metadata() const noexcept;
 
-    bool contains(const SqpDateTime &dateTime) const noexcept;
-    bool intersect(const SqpDateTime &dateTime) const noexcept;
-    bool isInside(const SqpDateTime &dateTime) const noexcept;
+    bool contains(const SqpRange &dateTime) const noexcept;
+    bool intersect(const SqpRange &dateTime) const noexcept;
+    bool isInside(const SqpRange &dateTime) const noexcept;
 
 public slots:
     void setDataSeries(std::shared_ptr<IDataSeries> dataSeries) noexcept;
diff --git a/core/include/Variable/VariableCacheController.h b/core/include/Variable/VariableCacheController.h
index 56da394..061b0f2 100644
--- a/core/include/Variable/VariableCacheController.h
+++ b/core/include/Variable/VariableCacheController.h
@@ -6,7 +6,7 @@
 #include <QLoggingCategory>
 #include <QObject>
 
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 #include <QLoggingCategory>
 
@@ -23,17 +23,17 @@ public:
     explicit VariableCacheController(QObject *parent = 0);
 
 
-    void addDateTime(std::shared_ptr<Variable> variable, const SqpDateTime &dateTime);
+    void addDateTime(std::shared_ptr<Variable> variable, const SqpRange &dateTime);
 
     /// Clears cache concerning a variable
     void clear(std::shared_ptr<Variable> variable) noexcept;
 
     /// Return all of the SqpDataTime part of the dateTime whose are not in the cache
-    QVector<SqpDateTime> provideNotInCacheDateTimeList(std::shared_ptr<Variable> variable,
-                                                       const SqpDateTime &dateTime);
+    QVector<SqpRange> provideNotInCacheDateTimeList(std::shared_ptr<Variable> variable,
+                                                    const SqpRange &dateTime);
 
 
-    QVector<SqpDateTime> dateCacheList(std::shared_ptr<Variable> variable) const noexcept;
+    QVector<SqpRange> dateCacheList(std::shared_ptr<Variable> variable) const noexcept;
 
     void displayCache(std::shared_ptr<Variable> variable) const;
 
diff --git a/core/include/Variable/VariableController.h b/core/include/Variable/VariableController.h
index d353ad7..d37a9f7 100644
--- a/core/include/Variable/VariableController.h
+++ b/core/include/Variable/VariableController.h
@@ -3,7 +3,7 @@
 
 #include "CoreGlobal.h"
 
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 #include <QLoggingCategory>
 #include <QObject>
@@ -62,11 +62,11 @@ signals:
     void variableAboutToBeDeleted(std::shared_ptr<Variable> variable);
 
     /// Signal emitted when a data acquisition is requested on a range for a variable
-    void rangeChanged(std::shared_ptr<Variable> variable, const SqpDateTime &range);
+    void rangeChanged(std::shared_ptr<Variable> variable, const SqpRange &range);
 
 public slots:
     /// Request the data loading of the variable whithin dateTime
-    void onRequestDataLoading(std::shared_ptr<Variable> variable, const SqpDateTime &dateTime);
+    void onRequestDataLoading(std::shared_ptr<Variable> variable, const SqpRange &dateTime);
     /**
      * Creates a new variable and adds it to the model
      * @param name the name of the new variable
@@ -77,7 +77,7 @@ public slots:
                         std::shared_ptr<IDataProvider> provider) noexcept;
 
     /// Update the temporal parameters of every selected variable to dateTime
-    void onDateTimeOnSelection(const SqpDateTime &dateTime);
+    void onDateTimeOnSelection(const SqpRange &dateTime);
 
 
     void onVariableRetrieveDataInProgress(QUuid identifier, double progress);
diff --git a/core/include/Variable/VariableModel.h b/core/include/Variable/VariableModel.h
index 44fa7b7..02c0ca6 100644
--- a/core/include/Variable/VariableModel.h
+++ b/core/include/Variable/VariableModel.h
@@ -3,7 +3,7 @@
 
 #include "CoreGlobal.h"
 
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 #include <QAbstractTableModel>
 #include <QLoggingCategory>
@@ -34,7 +34,7 @@ public:
      * @param metadata the metadata associated to the new variable
      * @return the pointer to the new variable
      */
-    std::shared_ptr<Variable> createVariable(const QString &name, const SqpDateTime &dateTime,
+    std::shared_ptr<Variable> createVariable(const QString &name, const SqpRange &dateTime,
                                              const QVariantHash &metadata) noexcept;
 
     /**
diff --git a/core/include/Visualization/VisualizationController.h b/core/include/Visualization/VisualizationController.h
index 1993e01..3206a78 100644
--- a/core/include/Visualization/VisualizationController.h
+++ b/core/include/Visualization/VisualizationController.h
@@ -3,7 +3,7 @@
 
 #include "CoreGlobal.h"
 
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 #include <QLoggingCategory>
 #include <QObject>
@@ -34,7 +34,7 @@ signals:
     void variableAboutToBeDeleted(std::shared_ptr<Variable> variable);
 
     /// Signal emitted when a data acquisition is requested on a range for a variable
-    void rangeChanged(std::shared_ptr<Variable> variable, const SqpDateTime &range);
+    void rangeChanged(std::shared_ptr<Variable> variable, const SqpRange &range);
 
 public slots:
     /// Manage init/end of the controller
diff --git a/core/src/Time/TimeController.cpp b/core/src/Time/TimeController.cpp
index 4e564c6..fee9f73 100644
--- a/core/src/Time/TimeController.cpp
+++ b/core/src/Time/TimeController.cpp
@@ -4,7 +4,7 @@ Q_LOGGING_CATEGORY(LOG_TimeController, "TimeController")
 
 struct TimeController::TimeControllerPrivate {
 
-    SqpDateTime m_DateTime;
+    SqpRange m_DateTime;
 };
 
 TimeController::TimeController(QObject *parent)
@@ -13,12 +13,12 @@ TimeController::TimeController(QObject *parent)
     qCDebug(LOG_TimeController()) << tr("TimeController construction");
 }
 
-SqpDateTime TimeController::dateTime() const noexcept
+SqpRange TimeController::dateTime() const noexcept
 {
     return impl->m_DateTime;
 }
 
-void TimeController::onTimeToUpdate(SqpDateTime dateTime)
+void TimeController::onTimeToUpdate(SqpRange dateTime)
 {
     impl->m_DateTime = dateTime;
 }
diff --git a/core/src/Variable/Variable.cpp b/core/src/Variable/Variable.cpp
index c866661..c64269d 100644
--- a/core/src/Variable/Variable.cpp
+++ b/core/src/Variable/Variable.cpp
@@ -1,7 +1,7 @@
 #include "Variable/Variable.h"
 
 #include <Data/IDataSeries.h>
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 #include <QReadWriteLock>
 #include <QThread>
@@ -9,7 +9,7 @@
 Q_LOGGING_CATEGORY(LOG_Variable, "Variable")
 
 struct Variable::VariablePrivate {
-    explicit VariablePrivate(const QString &name, const SqpDateTime &dateTime,
+    explicit VariablePrivate(const QString &name, const SqpRange &dateTime,
                              const QVariantHash &metadata)
             : m_Name{name}, m_DateTime{dateTime}, m_Metadata{metadata}, m_DataSeries{nullptr}
     {
@@ -17,12 +17,12 @@ struct Variable::VariablePrivate {
 
     QString m_Name;
 
-    SqpDateTime m_DateTime; // The dateTime available in the view and loaded. not the cache.
+    SqpRange m_DateTime; // The dateTime available in the view and loaded. not the cache.
     QVariantHash m_Metadata;
     std::unique_ptr<IDataSeries> m_DataSeries;
 };
 
-Variable::Variable(const QString &name, const SqpDateTime &dateTime, const QVariantHash &metadata)
+Variable::Variable(const QString &name, const SqpRange &dateTime, const QVariantHash &metadata)
         : impl{spimpl::make_unique_impl<VariablePrivate>(name, dateTime, metadata)}
 {
 }
@@ -32,12 +32,12 @@ QString Variable::name() const noexcept
     return impl->m_Name;
 }
 
-SqpDateTime Variable::dateTime() const noexcept
+SqpRange Variable::dateTime() const noexcept
 {
     return impl->m_DateTime;
 }
 
-void Variable::setDateTime(const SqpDateTime &dateTime) noexcept
+void Variable::setDateTime(const SqpRange &dateTime) noexcept
 {
     impl->m_DateTime = dateTime;
 }
@@ -70,17 +70,17 @@ QVariantHash Variable::metadata() const noexcept
     return impl->m_Metadata;
 }
 
-bool Variable::contains(const SqpDateTime &dateTime) const noexcept
+bool Variable::contains(const SqpRange &dateTime) const noexcept
 {
     return impl->m_DateTime.contains(dateTime);
 }
 
-bool Variable::intersect(const SqpDateTime &dateTime) const noexcept
+bool Variable::intersect(const SqpRange &dateTime) const noexcept
 {
     return impl->m_DateTime.intersect(dateTime);
 }
 
-bool Variable::isInside(const SqpDateTime &dateTime) const noexcept
+bool Variable::isInside(const SqpRange &dateTime) const noexcept
 {
-    return dateTime.contains(SqpDateTime{impl->m_DateTime.m_TStart, impl->m_DateTime.m_TEnd});
+    return dateTime.contains(SqpRange{impl->m_DateTime.m_TStart, impl->m_DateTime.m_TEnd});
 }
diff --git a/core/src/Variable/VariableCacheController.cpp b/core/src/Variable/VariableCacheController.cpp
index 526fc9e..fd1e836 100644
--- a/core/src/Variable/VariableCacheController.cpp
+++ b/core/src/Variable/VariableCacheController.cpp
@@ -8,19 +8,16 @@ Q_LOGGING_CATEGORY(LOG_VariableCacheController, "VariableCacheController")
 
 struct VariableCacheController::VariableCacheControllerPrivate {
 
-    std::unordered_map<std::shared_ptr<Variable>, QVector<SqpDateTime> >
-        m_VariableToSqpDateTimeListMap;
+    std::unordered_map<std::shared_ptr<Variable>, QVector<SqpRange> > m_VariableToSqpRangeListMap;
 
-    void addInCacheDataByEnd(const SqpDateTime &dateTime, QVector<SqpDateTime> &dateTimeList,
-                             QVector<SqpDateTime> &notInCache, int cacheIndex,
-                             double currentTStart);
+    void addInCacheDataByEnd(const SqpRange &dateTime, QVector<SqpRange> &dateTimeList,
+                             QVector<SqpRange> &notInCache, int cacheIndex, double currentTStart);
 
-    void addInCacheDataByStart(const SqpDateTime &dateTime, QVector<SqpDateTime> &dateTimeList,
-                               QVector<SqpDateTime> &notInCache, int cacheIndex,
-                               double currentTStart);
+    void addInCacheDataByStart(const SqpRange &dateTime, QVector<SqpRange> &dateTimeList,
+                               QVector<SqpRange> &notInCache, int cacheIndex, double currentTStart);
 
 
-    void addDateTimeRecurse(const SqpDateTime &dateTime, QVector<SqpDateTime> &dateTimeList,
+    void addDateTimeRecurse(const SqpRange &dateTime, QVector<SqpRange> &dateTimeList,
                             int cacheIndex);
 };
 
@@ -31,20 +28,20 @@ VariableCacheController::VariableCacheController(QObject *parent)
 }
 
 void VariableCacheController::addDateTime(std::shared_ptr<Variable> variable,
-                                          const SqpDateTime &dateTime)
+                                          const SqpRange &dateTime)
 {
     qCDebug(LOG_VariableCacheController()) << "VariableCacheController::addDateTime"
                                            << QThread::currentThread()->objectName();
     if (variable) {
-        auto findVariableIte = impl->m_VariableToSqpDateTimeListMap.find(variable);
-        if (findVariableIte == impl->m_VariableToSqpDateTimeListMap.end()) {
-            impl->m_VariableToSqpDateTimeListMap[variable].push_back(dateTime);
+        auto findVariableIte = impl->m_VariableToSqpRangeListMap.find(variable);
+        if (findVariableIte == impl->m_VariableToSqpRangeListMap.end()) {
+            impl->m_VariableToSqpRangeListMap[variable].push_back(dateTime);
         }
         else {
 
-            // addDateTime modify the list<SqpDateTime> of the variable in a way to ensure
+            // addDateTime modify the list<SqpRange> of the variable in a way to ensure
             // that the list is ordered : l(0) < l(1). We assume also a < b
-            // (with a & b of type SqpDateTime) means ts(b) > te(a)
+            // (with a & b of type SqpRange) means ts(b) > te(a)
 
             // The algorithm will try the merge of two interval:
             // - dateTime will be compare with the first interval of the list:
@@ -54,8 +51,8 @@ void VariableCacheController::addDateTime(std::shared_ptr<Variable> variable,
             //   C: if it is superior, we do the same with the next interval of the list
 
             try {
-                impl->addDateTimeRecurse(dateTime,
-                                         impl->m_VariableToSqpDateTimeListMap.at(variable), 0);
+                impl->addDateTimeRecurse(dateTime, impl->m_VariableToSqpRangeListMap.at(variable),
+                                         0);
             }
             catch (const std::out_of_range &e) {
                 qCWarning(LOG_VariableCacheController()) << "addDateTime" << e.what();
@@ -71,7 +68,7 @@ void VariableCacheController::clear(std::shared_ptr<Variable> variable) noexcept
         return;
     }
 
-    auto nbEntries = impl->m_VariableToSqpDateTimeListMap.erase(variable);
+    auto nbEntries = impl->m_VariableToSqpRangeListMap.erase(variable);
 
     auto clearCacheMessage
         = (nbEntries != 0)
@@ -80,21 +77,21 @@ void VariableCacheController::clear(std::shared_ptr<Variable> variable) noexcept
     qCDebug(LOG_VariableCacheController()) << clearCacheMessage;
 }
 
-QVector<SqpDateTime>
+QVector<SqpRange>
 VariableCacheController::provideNotInCacheDateTimeList(std::shared_ptr<Variable> variable,
-                                                       const SqpDateTime &dateTime)
+                                                       const SqpRange &dateTime)
 {
     qCDebug(LOG_VariableCacheController())
         << "VariableCacheController::provideNotInCacheDateTimeList"
         << QThread::currentThread()->objectName();
-    auto notInCache = QVector<SqpDateTime>{};
+    auto notInCache = QVector<SqpRange>{};
 
     // This algorithm is recursif. The idea is to localise the start time then the end time in the
     // list of date time request associated to the variable
     // We assume that the list is ordered in a way that l(0) < l(1). We assume also a < b
-    // (with a & b of type SqpDateTime) means ts(b) > te(a)
-    auto it = impl->m_VariableToSqpDateTimeListMap.find(variable);
-    if (it != impl->m_VariableToSqpDateTimeListMap.end()) {
+    // (with a & b of type SqpRange) means ts(b) > te(a)
+    auto it = impl->m_VariableToSqpRangeListMap.find(variable);
+    if (it != impl->m_VariableToSqpRangeListMap.end()) {
         impl->addInCacheDataByStart(dateTime, it->second, notInCache, 0, dateTime.m_TStart);
     }
     else {
@@ -104,22 +101,22 @@ VariableCacheController::provideNotInCacheDateTimeList(std::shared_ptr<Variable>
     return notInCache;
 }
 
-QVector<SqpDateTime>
+QVector<SqpRange>
 VariableCacheController::dateCacheList(std::shared_ptr<Variable> variable) const noexcept
 {
     qCDebug(LOG_VariableCacheController()) << "VariableCacheController::dateCacheList"
                                            << QThread::currentThread()->objectName();
     try {
-        return impl->m_VariableToSqpDateTimeListMap.at(variable);
+        return impl->m_VariableToSqpRangeListMap.at(variable);
     }
     catch (const std::out_of_range &e) {
         qCWarning(LOG_VariableCacheController()) << e.what();
-        return QVector<SqpDateTime>{};
+        return QVector<SqpRange>{};
     }
 }
 
 void VariableCacheController::VariableCacheControllerPrivate::addDateTimeRecurse(
-    const SqpDateTime &dateTime, QVector<SqpDateTime> &dateTimeList, int cacheIndex)
+    const SqpRange &dateTime, QVector<SqpRange> &dateTimeList, int cacheIndex)
 {
     const auto dateTimeListSize = dateTimeList.count();
     if (cacheIndex >= dateTimeListSize) {
@@ -143,7 +140,7 @@ void VariableCacheController::VariableCacheControllerPrivate::addDateTimeRecurse
         // rerun the algo from this index with the merged interval
         auto mTStart = std::min(dateTime.m_TStart, currentDateTime.m_TStart);
         auto mTEnd = std::max(dateTime.m_TEnd, currentDateTime.m_TEnd);
-        auto mergeDateTime = SqpDateTime{mTStart, mTEnd};
+        auto mergeDateTime = SqpRange{mTStart, mTEnd};
 
         dateTimeList.remove(cacheIndex);
         addDateTimeRecurse(mergeDateTime, dateTimeList, cacheIndex);
@@ -152,15 +149,15 @@ void VariableCacheController::VariableCacheControllerPrivate::addDateTimeRecurse
 
 
 void VariableCacheController::VariableCacheControllerPrivate::addInCacheDataByEnd(
-    const SqpDateTime &dateTime, QVector<SqpDateTime> &dateTimeList,
-    QVector<SqpDateTime> &notInCache, int cacheIndex, double currentTStart)
+    const SqpRange &dateTime, QVector<SqpRange> &dateTimeList, QVector<SqpRange> &notInCache,
+    int cacheIndex, double currentTStart)
 {
     const auto dateTimeListSize = dateTimeList.count();
     if (cacheIndex >= dateTimeListSize) {
         if (currentTStart < dateTime.m_TEnd) {
 
             // te localised after all other interval: The last interval is [currentTsart, te]
-            notInCache.push_back(SqpDateTime{currentTStart, dateTime.m_TEnd});
+            notInCache.push_back(SqpRange{currentTStart, dateTime.m_TEnd});
         }
         return;
     }
@@ -168,10 +165,10 @@ void VariableCacheController::VariableCacheControllerPrivate::addInCacheDataByEn
     auto currentDateTimeJ = dateTimeList[cacheIndex];
     if (dateTime.m_TEnd <= currentDateTimeJ.m_TStart) {
         // te localised between to interval: The last interval is [currentTsart, te]
-        notInCache.push_back(SqpDateTime{currentTStart, dateTime.m_TEnd});
+        notInCache.push_back(SqpRange{currentTStart, dateTime.m_TEnd});
     }
     else {
-        notInCache.push_back(SqpDateTime{currentTStart, currentDateTimeJ.m_TStart});
+        notInCache.push_back(SqpRange{currentTStart, currentDateTimeJ.m_TStart});
         if (dateTime.m_TEnd > currentDateTimeJ.m_TEnd) {
             // te not localised before the current interval: we need to look at the next interval
             addInCacheDataByEnd(dateTime, dateTimeList, notInCache, ++cacheIndex,
@@ -181,13 +178,13 @@ void VariableCacheController::VariableCacheControllerPrivate::addInCacheDataByEn
 }
 
 void VariableCacheController::VariableCacheControllerPrivate::addInCacheDataByStart(
-    const SqpDateTime &dateTime, QVector<SqpDateTime> &dateTimeList,
-    QVector<SqpDateTime> &notInCache, int cacheIndex, double currentTStart)
+    const SqpRange &dateTime, QVector<SqpRange> &dateTimeList, QVector<SqpRange> &notInCache,
+    int cacheIndex, double currentTStart)
 {
     const auto dateTimeListSize = dateTimeList.count();
     if (cacheIndex >= dateTimeListSize) {
         // ts localised after all other interval: The last interval is [ts, te]
-        notInCache.push_back(SqpDateTime{currentTStart, dateTime.m_TEnd});
+        notInCache.push_back(SqpRange{currentTStart, dateTime.m_TEnd});
         return;
     }
 
@@ -216,8 +213,8 @@ void VariableCacheController::VariableCacheControllerPrivate::addInCacheDataBySt
 
 void VariableCacheController::displayCache(std::shared_ptr<Variable> variable) const
 {
-    auto variableDateTimeList = impl->m_VariableToSqpDateTimeListMap.find(variable);
-    if (variableDateTimeList != impl->m_VariableToSqpDateTimeListMap.end()) {
+    auto variableDateTimeList = impl->m_VariableToSqpRangeListMap.find(variable);
+    if (variableDateTimeList != impl->m_VariableToSqpRangeListMap.end()) {
         qCInfo(LOG_VariableCacheController()) << tr("VariableCacheController::displayCache")
                                               << variableDateTimeList->second;
     }
diff --git a/core/src/Variable/VariableController.cpp b/core/src/Variable/VariableController.cpp
index e69b4de..6296525 100644
--- a/core/src/Variable/VariableController.cpp
+++ b/core/src/Variable/VariableController.cpp
@@ -150,7 +150,7 @@ void VariableController::createVariable(const QString &name, const QVariantHash 
     }
 }
 
-void VariableController::onDateTimeOnSelection(const SqpDateTime &dateTime)
+void VariableController::onDateTimeOnSelection(const SqpRange &dateTime)
 {
     qCDebug(LOG_VariableController()) << "VariableController::onDateTimeOnSelection"
                                       << QThread::currentThread()->objectName();
@@ -196,7 +196,7 @@ void VariableController::onAbortProgressRequested(std::shared_ptr<Variable> vari
 
 
 void VariableController::onRequestDataLoading(std::shared_ptr<Variable> variable,
-                                              const SqpDateTime &dateTime)
+                                              const SqpRange &dateTime)
 {
     qCDebug(LOG_VariableController()) << "VariableController::onRequestDataLoading"
                                       << QThread::currentThread()->objectName();
diff --git a/core/src/Variable/VariableModel.cpp b/core/src/Variable/VariableModel.cpp
index 6b929c3..971f48a 100644
--- a/core/src/Variable/VariableModel.cpp
+++ b/core/src/Variable/VariableModel.cpp
@@ -60,7 +60,7 @@ VariableModel::VariableModel(QObject *parent)
 }
 
 std::shared_ptr<Variable> VariableModel::createVariable(const QString &name,
-                                                        const SqpDateTime &dateTime,
+                                                        const SqpRange &dateTime,
                                                         const QVariantHash &metadata) noexcept
 {
     auto insertIndex = rowCount();
diff --git a/core/tests/Variable/TestVariableCacheController.cpp b/core/tests/Variable/TestVariableCacheController.cpp
index 92f886b..a46dd04 100644
--- a/core/tests/Variable/TestVariableCacheController.cpp
+++ b/core/tests/Variable/TestVariableCacheController.cpp
@@ -22,18 +22,18 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
 
     auto ts0 = QDateTime{QDate{2017, 01, 01}, QTime{2, 3, 0, 0}};
     auto te0 = QDateTime{QDate{2017, 01, 01}, QTime{2, 4, 0, 0}};
-    auto sqp0 = SqpDateTime{static_cast<double>(ts0.toMSecsSinceEpoch()),
-                            static_cast<double>(te0.toMSecsSinceEpoch())};
+    auto sqp0 = SqpRange{static_cast<double>(ts0.toMSecsSinceEpoch()),
+                         static_cast<double>(te0.toMSecsSinceEpoch())};
 
     auto ts1 = QDateTime{QDate{2017, 01, 01}, QTime{2, 6, 0, 0}};
     auto te1 = QDateTime{QDate{2017, 01, 01}, QTime{2, 8, 0, 0}};
-    auto sqp1 = SqpDateTime{static_cast<double>(ts1.toMSecsSinceEpoch()),
-                            static_cast<double>(te1.toMSecsSinceEpoch())};
+    auto sqp1 = SqpRange{static_cast<double>(ts1.toMSecsSinceEpoch()),
+                         static_cast<double>(te1.toMSecsSinceEpoch())};
 
     auto ts2 = QDateTime{QDate{2017, 01, 01}, QTime{2, 18, 0, 0}};
     auto te2 = QDateTime{QDate{2017, 01, 01}, QTime{2, 20, 0, 0}};
-    auto sqp2 = SqpDateTime{static_cast<double>(ts2.toMSecsSinceEpoch()),
-                            static_cast<double>(te2.toMSecsSinceEpoch())};
+    auto sqp2 = SqpRange{static_cast<double>(ts2.toMSecsSinceEpoch()),
+                         static_cast<double>(te2.toMSecsSinceEpoch())};
 
     auto var0 = std::make_shared<Variable>("", sqp0);
 
@@ -44,8 +44,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // first case [ts,te] < ts0
     auto ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 0, 0, 0}};
     auto te = QDateTime{QDate{2017, 01, 01}, QTime{2, 1, 0, 0}};
-    auto sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                           static_cast<double>(te.toMSecsSinceEpoch())};
+    auto sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                        static_cast<double>(te.toMSecsSinceEpoch())};
 
 
     auto notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
@@ -59,8 +59,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // second case ts < ts0 &&  ts0 < te <= te0
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 0, 0, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 3, 30, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
@@ -73,8 +73,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // 3th case ts < ts0 &&  te0 < te <= ts1
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 0, 0, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 5, 0, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
@@ -91,8 +91,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // 4th case ts < ts0 &&  ts1 < te <= te1
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 0, 0, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 7, 0, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
@@ -109,8 +109,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // 5th case ts < ts0 &&  te3 < te
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 0, 0, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 22, 0, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
@@ -136,8 +136,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // 6th case ts2 < ts
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 45, 0, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 47, 0, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
@@ -150,8 +150,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // 7th case ts = te0 && te < ts1
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 4, 0, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 5, 0, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
@@ -164,8 +164,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // 8th case ts0 < ts < te0 && te < ts1
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 3, 30, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 5, 0, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
@@ -178,8 +178,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // 9th case ts0 < ts < te0 &&  ts1 < te < te1
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 3, 30, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 7, 0, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
@@ -192,8 +192,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // 10th case te1 < ts < te < ts2
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 9, 0, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 10, 0, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
@@ -206,8 +206,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // 11th case te0 < ts < ts1 &&  te3 < te
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 5, 0, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 47, 0, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
@@ -228,8 +228,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // 12th case te0 < ts < ts1 &&  te3 < te
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 5, 0, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 10, 0, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
 
@@ -246,8 +246,8 @@ void TestVariableCacheController::testProvideNotInCacheDateTimeList()
     // 12th case ts0 < ts < te0
     ts = QDateTime{QDate{2017, 01, 01}, QTime{2, 3, 10, 0}};
     te = QDateTime{QDate{2017, 01, 01}, QTime{2, 3, 50, 0}};
-    sqp = SqpDateTime{static_cast<double>(ts.toMSecsSinceEpoch()),
-                      static_cast<double>(te.toMSecsSinceEpoch())};
+    sqp = SqpRange{static_cast<double>(ts.toMSecsSinceEpoch()),
+                   static_cast<double>(te.toMSecsSinceEpoch())};
 
     notInCach = variableCacheController.provideNotInCacheDateTimeList(var0, sqp);
     QCOMPARE(notInCach.size(), 0);
@@ -260,33 +260,33 @@ void TestVariableCacheController::testAddDateTime()
 
     auto ts0 = QDateTime{QDate{2017, 01, 01}, QTime{2, 3, 0, 0}};
     auto te0 = QDateTime{QDate{2017, 01, 01}, QTime{2, 4, 0, 0}};
-    auto sqp0 = SqpDateTime{static_cast<double>(ts0.toMSecsSinceEpoch()),
-                            static_cast<double>(te0.toMSecsSinceEpoch())};
+    auto sqp0 = SqpRange{static_cast<double>(ts0.toMSecsSinceEpoch()),
+                         static_cast<double>(te0.toMSecsSinceEpoch())};
 
     auto ts1 = QDateTime{QDate{2017, 01, 01}, QTime{2, 6, 0, 0}};
     auto te1 = QDateTime{QDate{2017, 01, 01}, QTime{2, 8, 0, 0}};
-    auto sqp1 = SqpDateTime{static_cast<double>(ts1.toMSecsSinceEpoch()),
-                            static_cast<double>(te1.toMSecsSinceEpoch())};
+    auto sqp1 = SqpRange{static_cast<double>(ts1.toMSecsSinceEpoch()),
+                         static_cast<double>(te1.toMSecsSinceEpoch())};
 
     auto ts2 = QDateTime{QDate{2017, 01, 01}, QTime{2, 18, 0, 0}};
     auto te2 = QDateTime{QDate{2017, 01, 01}, QTime{2, 20, 0, 0}};
-    auto sqp2 = SqpDateTime{static_cast<double>(ts2.toMSecsSinceEpoch()),
-                            static_cast<double>(te2.toMSecsSinceEpoch())};
+    auto sqp2 = SqpRange{static_cast<double>(ts2.toMSecsSinceEpoch()),
+                         static_cast<double>(te2.toMSecsSinceEpoch())};
 
     auto ts01 = QDateTime{QDate{2017, 01, 01}, QTime{2, 4, 0, 0}};
     auto te01 = QDateTime{QDate{2017, 01, 01}, QTime{2, 6, 0, 0}};
-    auto sqp01 = SqpDateTime{static_cast<double>(ts01.toMSecsSinceEpoch()),
-                             static_cast<double>(te01.toMSecsSinceEpoch())};
+    auto sqp01 = SqpRange{static_cast<double>(ts01.toMSecsSinceEpoch()),
+                          static_cast<double>(te01.toMSecsSinceEpoch())};
 
     auto ts3 = QDateTime{QDate{2017, 01, 01}, QTime{2, 14, 0, 0}};
     auto te3 = QDateTime{QDate{2017, 01, 01}, QTime{2, 16, 0, 0}};
-    auto sqp3 = SqpDateTime{static_cast<double>(ts3.toMSecsSinceEpoch()),
-                            static_cast<double>(te3.toMSecsSinceEpoch())};
+    auto sqp3 = SqpRange{static_cast<double>(ts3.toMSecsSinceEpoch()),
+                         static_cast<double>(te3.toMSecsSinceEpoch())};
 
     auto ts03 = QDateTime{QDate{2017, 01, 01}, QTime{2, 4, 0, 0}};
     auto te03 = QDateTime{QDate{2017, 01, 01}, QTime{2, 22, 0, 0}};
-    auto sqp03 = SqpDateTime{static_cast<double>(ts03.toMSecsSinceEpoch()),
-                             static_cast<double>(te03.toMSecsSinceEpoch())};
+    auto sqp03 = SqpRange{static_cast<double>(ts03.toMSecsSinceEpoch()),
+                          static_cast<double>(te03.toMSecsSinceEpoch())};
 
 
     auto var0 = std::make_shared<Variable>("", sqp0);
diff --git a/gui/include/TimeWidget/TimeWidget.h b/gui/include/TimeWidget/TimeWidget.h
index de7ee69..575ebd7 100644
--- a/gui/include/TimeWidget/TimeWidget.h
+++ b/gui/include/TimeWidget/TimeWidget.h
@@ -3,7 +3,7 @@
 
 #include <QWidget>
 
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 namespace Ui {
 class TimeWidget;
@@ -18,7 +18,7 @@ public:
 
 signals:
     /// Signal emitted when the time parameters has beed updated
-    void timeUpdated(SqpDateTime time);
+    void timeUpdated(SqpRange time);
 
 public slots:
     /// slot called when time parameters update has ben requested
diff --git a/gui/include/Visualization/VisualizationGraphHelper.h b/gui/include/Visualization/VisualizationGraphHelper.h
index f8f5687..efdb6f2 100644
--- a/gui/include/Visualization/VisualizationGraphHelper.h
+++ b/gui/include/Visualization/VisualizationGraphHelper.h
@@ -1,7 +1,7 @@
 #ifndef SCIQLOP_VISUALIZATIONGRAPHHELPER_H
 #define SCIQLOP_VISUALIZATIONGRAPHHELPER_H
 
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 #include <QLoggingCategory>
 #include <QVector>
@@ -32,7 +32,7 @@ struct VisualizationGraphHelper {
                                                   QCustomPlot &plot) noexcept;
 
     static void updateData(QVector<QCPAbstractPlottable *> plotableVect, IDataSeries *dataSeries,
-                           const SqpDateTime &dateTime);
+                           const SqpRange &dateTime);
 };
 
 #endif // SCIQLOP_VISUALIZATIONGRAPHHELPER_H
diff --git a/gui/include/Visualization/VisualizationGraphWidget.h b/gui/include/Visualization/VisualizationGraphWidget.h
index a015f24..6ddcc72 100644
--- a/gui/include/Visualization/VisualizationGraphWidget.h
+++ b/gui/include/Visualization/VisualizationGraphWidget.h
@@ -13,7 +13,7 @@
 Q_DECLARE_LOGGING_CATEGORY(LOG_VisualizationGraphWidget)
 
 class QCPRange;
-class SqpDateTime;
+class SqpRange;
 class Variable;
 
 /**
@@ -39,9 +39,9 @@ public:
     /// Removes a variable from the graph
     void removeVariable(std::shared_ptr<Variable> variable) noexcept;
 
-    void setRange(std::shared_ptr<Variable> variable, const SqpDateTime &range);
-    SqpDateTime graphRange() const noexcept;
-    void setGraphRange(const SqpDateTime &range);
+    void setRange(std::shared_ptr<Variable> variable, const SqpRange &range);
+    SqpRange graphRange() const noexcept;
+    void setGraphRange(const SqpRange &range);
 
     // IVisualizationWidget interface
     void accept(IVisualizationWidgetVisitor *visitor) override;
@@ -51,8 +51,8 @@ public:
 
 
 signals:
-    void requestDataLoading(std::shared_ptr<Variable> variable, const SqpDateTime &dateTime);
-    void synchronize(const SqpDateTime &dateTime, const SqpDateTime &oldDateTime,
+    void requestDataLoading(std::shared_ptr<Variable> variable, const SqpRange &dateTime);
+    void synchronize(const SqpRange &dateTime, const SqpRange &oldDateTime,
                      VisualizationGraphWidgetZoomType zoomType);
 
 
diff --git a/gui/include/Visualization/VisualizationWidget.h b/gui/include/Visualization/VisualizationWidget.h
index 79e2538..2d89820 100644
--- a/gui/include/Visualization/VisualizationWidget.h
+++ b/gui/include/Visualization/VisualizationWidget.h
@@ -2,7 +2,7 @@
 #define SCIQLOP_VISUALIZATIONWIDGET_H
 
 #include "Visualization/IVisualizationWidget.h"
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 #include <QLoggingCategory>
 #include <QWidget>
@@ -42,7 +42,7 @@ public slots:
     /// Slot called when a variable is about to be deleted from SciQlop
     void onVariableAboutToBeDeleted(std::shared_ptr<Variable> variable) noexcept;
 
-    void onRangeChanged(std::shared_ptr<Variable> variable, const SqpDateTime &range) noexcept;
+    void onRangeChanged(std::shared_ptr<Variable> variable, const SqpRange &range) noexcept;
 
 private:
     Ui::VisualizationWidget *ui;
diff --git a/gui/include/Visualization/operations/RescaleAxeOperation.h b/gui/include/Visualization/operations/RescaleAxeOperation.h
index 5e348bb..b4900cb 100644
--- a/gui/include/Visualization/operations/RescaleAxeOperation.h
+++ b/gui/include/Visualization/operations/RescaleAxeOperation.h
@@ -2,7 +2,7 @@
 #define SCIQLOP_RESCALEAXEOPERATION_H
 
 #include "Visualization/IVisualizationWidgetVisitor.h"
-#include <Data/SqpDateTime.h>
+#include <Data/SqpRange.h>
 
 #include <Common/spimpl.h>
 
@@ -24,7 +24,7 @@ public:
      * Ctor
      * @param variable the variable to remove from widgets
      */
-    explicit RescaleAxeOperation(std::shared_ptr<Variable> variable, const SqpDateTime &range);
+    explicit RescaleAxeOperation(std::shared_ptr<Variable> variable, const SqpRange &range);
 
     void visitEnter(VisualizationWidget *widget) override final;
     void visitLeave(VisualizationWidget *widget) override final;
diff --git a/gui/src/SqpApplication.cpp b/gui/src/SqpApplication.cpp
index 89e0249..1bc25b7 100644
--- a/gui/src/SqpApplication.cpp
+++ b/gui/src/SqpApplication.cpp
@@ -39,9 +39,9 @@ public:
                 SIGNAL(variableAboutToBeDeleted(std::shared_ptr<Variable>)), Qt::DirectConnection);
 
         connect(m_VariableController.get(),
-                SIGNAL(rangeChanged(std::shared_ptr<Variable>, const SqpDateTime &)),
+                SIGNAL(rangeChanged(std::shared_ptr<Variable>, const SqpRange &)),
                 m_VisualizationController.get(),
-                SIGNAL(rangeChanged(std::shared_ptr<Variable>, const SqpDateTime &)));
+                SIGNAL(rangeChanged(std::shared_ptr<Variable>, const SqpRange &)));
 
 
         m_DataSourceController->moveToThread(&m_DataSourceControllerThread);
diff --git a/gui/src/TimeWidget/TimeWidget.cpp b/gui/src/TimeWidget/TimeWidget.cpp
index 01cd71f..08801fe 100644
--- a/gui/src/TimeWidget/TimeWidget.cpp
+++ b/gui/src/TimeWidget/TimeWidget.cpp
@@ -29,8 +29,8 @@ TimeWidget::TimeWidget(QWidget *parent) : QWidget{parent}, ui{new Ui::TimeWidget
     ui->startDateTimeEdit->setDateTime(startDateTime);
     ui->endDateTimeEdit->setDateTime(endDateTime);
 
-    auto dateTime = SqpDateTime{DateUtils::secondsSinceEpoch(startDateTime),
-                                DateUtils::secondsSinceEpoch(endDateTime)};
+    auto dateTime = SqpRange{DateUtils::secondsSinceEpoch(startDateTime),
+                             DateUtils::secondsSinceEpoch(endDateTime)};
 
     sqpApp->timeController().onTimeToUpdate(dateTime);
 }
@@ -43,8 +43,8 @@ TimeWidget::~TimeWidget()
 
 void TimeWidget::onTimeUpdateRequested()
 {
-    auto dateTime = SqpDateTime{DateUtils::secondsSinceEpoch(ui->startDateTimeEdit->dateTime()),
-                                DateUtils::secondsSinceEpoch(ui->endDateTimeEdit->dateTime())};
+    auto dateTime = SqpRange{DateUtils::secondsSinceEpoch(ui->startDateTimeEdit->dateTime()),
+                             DateUtils::secondsSinceEpoch(ui->endDateTimeEdit->dateTime())};
 
     emit timeUpdated(std::move(dateTime));
 }
diff --git a/gui/src/Visualization/VisualizationGraphHelper.cpp b/gui/src/Visualization/VisualizationGraphHelper.cpp
index 0ea7ff6..0e80e3c 100644
--- a/gui/src/Visualization/VisualizationGraphHelper.cpp
+++ b/gui/src/Visualization/VisualizationGraphHelper.cpp
@@ -36,7 +36,7 @@ QSharedPointer<QCPAxisTicker> axisTicker(bool isTimeAxis)
 }
 
 void updateScalarData(QCPAbstractPlottable *component, ScalarSeries &scalarSeries,
-                      const SqpDateTime &dateTime)
+                      const SqpRange &dateTime)
 {
     qCDebug(LOG_VisualizationGraphHelper()) << "TORM: updateScalarData"
                                             << QThread::currentThread()->objectName();
@@ -80,7 +80,7 @@ void updateScalarData(QCPAbstractPlottable *component, ScalarSeries &scalarSerie
 }
 
 QCPAbstractPlottable *createScalarSeriesComponent(ScalarSeries &scalarSeries, QCustomPlot &plot,
-                                                  const SqpDateTime &dateTime)
+                                                  const SqpRange &dateTime)
 {
     auto component = plot.addGraph();
 
@@ -144,7 +144,7 @@ QVector<QCPAbstractPlottable *> VisualizationGraphHelper::create(std::shared_ptr
 }
 
 void VisualizationGraphHelper::updateData(QVector<QCPAbstractPlottable *> plotableVect,
-                                          IDataSeries *dataSeries, const SqpDateTime &dateTime)
+                                          IDataSeries *dataSeries, const SqpRange &dateTime)
 {
     if (auto scalarSeries = dynamic_cast<ScalarSeries *>(dataSeries)) {
         if (plotableVect.size() == 1) {
diff --git a/gui/src/Visualization/VisualizationGraphWidget.cpp b/gui/src/Visualization/VisualizationGraphWidget.cpp
index eb70fb8..57c2cec 100644
--- a/gui/src/Visualization/VisualizationGraphWidget.cpp
+++ b/gui/src/Visualization/VisualizationGraphWidget.cpp
@@ -119,7 +119,7 @@ void VisualizationGraphWidget::addVariableUsingGraph(std::shared_ptr<Variable> v
 
     // when adding a variable, we need to set its time range to the current graph range
     auto grapheRange = ui->widget->xAxis->range();
-    auto dateTime = SqpDateTime{grapheRange.lower, grapheRange.upper};
+    auto dateTime = SqpRange{grapheRange.lower, grapheRange.upper};
     variable->setDateTime(dateTime);
 
     auto variableDateTimeWithTolerance = dateTime;
@@ -159,8 +159,7 @@ void VisualizationGraphWidget::removeVariable(std::shared_ptr<Variable> variable
     ui->widget->replot();
 }
 
-void VisualizationGraphWidget::setRange(std::shared_ptr<Variable> variable,
-                                        const SqpDateTime &range)
+void VisualizationGraphWidget::setRange(std::shared_ptr<Variable> variable, const SqpRange &range)
 {
     // Note: in case of different axes that depends on variable, we could start with a code like
     // that:
@@ -171,13 +170,13 @@ void VisualizationGraphWidget::setRange(std::shared_ptr<Variable> variable,
     ui->widget->replot();
 }
 
-SqpDateTime VisualizationGraphWidget::graphRange() const noexcept
+SqpRange VisualizationGraphWidget::graphRange() const noexcept
 {
     auto grapheRange = ui->widget->xAxis->range();
-    return SqpDateTime{grapheRange.lower, grapheRange.upper};
+    return SqpRange{grapheRange.lower, grapheRange.upper};
 }
 
-void VisualizationGraphWidget::setGraphRange(const SqpDateTime &range)
+void VisualizationGraphWidget::setGraphRange(const SqpRange &range)
 {
     qCDebug(LOG_VisualizationGraphWidget()) << tr("VisualizationGraphWidget::setGraphRange START");
     ui->widget->xAxis->setRange(range.m_TStart, range.m_TEnd);
@@ -243,7 +242,7 @@ void VisualizationGraphWidget::onRangeChanged(const QCPRange &t1, const QCPRange
     qCInfo(LOG_VisualizationGraphWidget()) << tr("VisualizationGraphWidget::onRangeChanged")
                                            << QThread::currentThread()->objectName();
 
-    auto dateTimeRange = SqpDateTime{t1.lower, t1.upper};
+    auto dateTimeRange = SqpRange{t1.lower, t1.upper};
 
     auto zoomType = impl->getZoomType(t1, t2);
     for (auto it = impl->m_VariableToPlotMultiMap.cbegin();
@@ -331,7 +330,7 @@ void VisualizationGraphWidget::onRangeChanged(const QCPRange &t1, const QCPRange
     }
 
     if (impl->m_DoSynchronize && !impl->m_IsCalibration) {
-        auto oldDateTime = SqpDateTime{t2.lower, t2.upper};
+        auto oldDateTime = SqpRange{t2.lower, t2.upper};
         qCDebug(LOG_VisualizationGraphWidget())
             << tr("TORM: VisualizationGraphWidget::Synchronize notify !!")
             << QThread::currentThread()->objectName();
@@ -385,7 +384,7 @@ void VisualizationGraphWidget::onDataCacheVariableUpdated()
     //    - use a map (unique keys) and store as values directly the list of components
 
     auto grapheRange = ui->widget->xAxis->range();
-    auto dateTime = SqpDateTime{grapheRange.lower, grapheRange.upper};
+    auto dateTime = SqpRange{grapheRange.lower, grapheRange.upper};
 
     for (auto it = impl->m_VariableToPlotMultiMap.cbegin();
          it != impl->m_VariableToPlotMultiMap.cend(); ++it) {
diff --git a/gui/src/Visualization/VisualizationWidget.cpp b/gui/src/Visualization/VisualizationWidget.cpp
index c5d86c7..7708ca1 100644
--- a/gui/src/Visualization/VisualizationWidget.cpp
+++ b/gui/src/Visualization/VisualizationWidget.cpp
@@ -144,7 +144,7 @@ void VisualizationWidget::onVariableAboutToBeDeleted(std::shared_ptr<Variable> v
 }
 
 void VisualizationWidget::onRangeChanged(std::shared_ptr<Variable> variable,
-                                         const SqpDateTime &range) noexcept
+                                         const SqpRange &range) noexcept
 {
     // Calls the operation of rescaling all graph that contrains variable in the visualization
     auto rescaleVariableOperation = RescaleAxeOperation{variable, range};
diff --git a/gui/src/Visualization/VisualizationZoneWidget.cpp b/gui/src/Visualization/VisualizationZoneWidget.cpp
index 293a585..05651a3 100644
--- a/gui/src/Visualization/VisualizationZoneWidget.cpp
+++ b/gui/src/Visualization/VisualizationZoneWidget.cpp
@@ -1,6 +1,6 @@
 #include "Visualization/VisualizationZoneWidget.h"
 
-#include "Data/SqpDateTime.h"
+#include "Data/SqpRange.h"
 
 #include "Visualization/IVisualizationWidgetVisitor.h"
 #include "Visualization/VisualizationGraphWidget.h"
@@ -70,8 +70,8 @@ VisualizationGraphWidget *VisualizationZoneWidget::createGraph(std::shared_ptr<V
     graphWidget->addVariable(variable);
 
     // Lambda to synchronize zone widget
-    auto synchronizeZoneWidget = [this, graphWidget](const SqpDateTime &dateTime,
-                                                     const SqpDateTime &oldDateTime,
+    auto synchronizeZoneWidget = [this, graphWidget](const SqpRange &dateTime,
+                                                     const SqpRange &oldDateTime,
                                                      VisualizationGraphWidgetZoomType zoomType) {
         auto frameLayout = ui->visualizationZoneFrame->layout();
         for (auto i = 0; i < frameLayout->count(); ++i) {
diff --git a/gui/src/Visualization/operations/RescaleAxeOperation.cpp b/gui/src/Visualization/operations/RescaleAxeOperation.cpp
index 7f8fc66..5c5583e 100644
--- a/gui/src/Visualization/operations/RescaleAxeOperation.cpp
+++ b/gui/src/Visualization/operations/RescaleAxeOperation.cpp
@@ -4,18 +4,16 @@
 Q_LOGGING_CATEGORY(LOG_RescaleAxeOperation, "RescaleAxeOperation")
 
 struct RescaleAxeOperation::RescaleAxeOperationPrivate {
-    explicit RescaleAxeOperationPrivate(std::shared_ptr<Variable> variable,
-                                        const SqpDateTime &range)
+    explicit RescaleAxeOperationPrivate(std::shared_ptr<Variable> variable, const SqpRange &range)
             : m_Variable{variable}, m_Range{range}
     {
     }
 
     std::shared_ptr<Variable> m_Variable;
-    SqpDateTime m_Range;
+    SqpRange m_Range;
 };
 
-RescaleAxeOperation::RescaleAxeOperation(std::shared_ptr<Variable> variable,
-                                         const SqpDateTime &range)
+RescaleAxeOperation::RescaleAxeOperation(std::shared_ptr<Variable> variable, const SqpRange &range)
         : impl{spimpl::make_unique_impl<RescaleAxeOperationPrivate>(variable, range)}
 {
 }
diff --git a/plugins/amda/include/AmdaProvider.h b/plugins/amda/include/AmdaProvider.h
index 6188efe..1f0438d 100644
--- a/plugins/amda/include/AmdaProvider.h
+++ b/plugins/amda/include/AmdaProvider.h
@@ -24,7 +24,7 @@ public:
     void requestDataAborting(QUuid identifier) override;
 
 private:
-    void retrieveData(QUuid token, const SqpDateTime &dateTime, const QVariantHash &data);
+    void retrieveData(QUuid token, const SqpRange &dateTime, const QVariantHash &data);
 };
 
 #endif // SCIQLOP_AMDAPROVIDER_H
diff --git a/plugins/amda/src/AmdaProvider.cpp b/plugins/amda/src/AmdaProvider.cpp
index ccb5456..48d35ba 100644
--- a/plugins/amda/src/AmdaProvider.cpp
+++ b/plugins/amda/src/AmdaProvider.cpp
@@ -30,9 +30,9 @@ const auto AMDA_URL_FORMAT = QStringLiteral(
 const auto AMDA_TIME_FORMAT = QStringLiteral("yyyy-MM-ddThh:mm:ss");
 
 /// Formats a time to a date that can be passed in URL
-QString dateFormat(double sqpDateTime) noexcept
+QString dateFormat(double sqpRange) noexcept
 {
-    auto dateTime = DateUtils::dateTime(sqpDateTime);
+    auto dateTime = DateUtils::dateTime(sqpRange);
     return dateTime.toString(AMDA_TIME_FORMAT);
 }
 
@@ -73,7 +73,7 @@ void AmdaProvider::requestDataAborting(QUuid identifier)
     }
 }
 
-void AmdaProvider::retrieveData(QUuid token, const SqpDateTime &dateTime, const QVariantHash &data)
+void AmdaProvider::retrieveData(QUuid token, const SqpRange &dateTime, const QVariantHash &data)
 {
     // Retrieves product ID from data: if the value is invalid, no request is made
     auto productId = data.value(AMDA_XML_ID_KEY).toString();
diff --git a/plugins/mockplugin/include/CosinusProvider.h b/plugins/mockplugin/include/CosinusProvider.h
index 44ae6c6..edcd531 100644
--- a/plugins/mockplugin/include/CosinusProvider.h
+++ b/plugins/mockplugin/include/CosinusProvider.h
@@ -25,7 +25,7 @@ public:
 
 
 private:
-    std::shared_ptr<IDataSeries> retrieveData(QUuid token, const SqpDateTime &dateTime);
+    std::shared_ptr<IDataSeries> retrieveData(QUuid token, const SqpRange &dateTime);
 
     QHash<QUuid, bool> m_VariableToEnableProvider;
 };
diff --git a/plugins/mockplugin/src/CosinusProvider.cpp b/plugins/mockplugin/src/CosinusProvider.cpp
index bdc4345..d00c3e5 100644
--- a/plugins/mockplugin/src/CosinusProvider.cpp
+++ b/plugins/mockplugin/src/CosinusProvider.cpp
@@ -11,7 +11,7 @@
 
 Q_LOGGING_CATEGORY(LOG_CosinusProvider, "CosinusProvider")
 
-std::shared_ptr<IDataSeries> CosinusProvider::retrieveData(QUuid token, const SqpDateTime &dateTime)
+std::shared_ptr<IDataSeries> CosinusProvider::retrieveData(QUuid token, const SqpRange &dateTime)
 {
     // TODO: Add Mutex
     auto dataIndex = 0;