h1. Known time description

h2. Double Time ranges : date from 01/01/1970 to 01/01/2100

* seconds from 01/01/1970 00:00:00  :  0 to 4 102 488 000
* milliseconds from 01/01/1970 00:00:00  :  0 to 4 102 488 000 000    (ambiguity for the first 48days of 1970 with previous time format)
* seconds from 01/01/0000 00:00:00  :  62 168 472 000 to 66 270 960 000 (no ambiguity)
* milliseconds from 01/01/0000 00:00:00 : 62 168 472 000 000 to 66 270 960 000 000 (no ambiguity)
* seconds from 01/01/2000 00:00:00  :  - 946 728 000 to 3 155 760 000 ( ambiguity with first time format for time before 2000)
* milliseconds from 01/01/2000 00:00:00  :  - 946 728 000 000 to 3 155 760 000 000 (ambiguity for both time from 1970 and 2000)