You don't understand the startdates?
Take, for example, 20010109.1530
Let me stick some spaces in some helpful places:
2001 01 09 . 15 30
That better?
20010109 means 9th January 2001, and 1530 is in 24-hour clock format, IE 3:30PM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.