You don't understand the startdates?
Take, for example, 20000927.1649
Let me stick some spaces in some helpful places:
2000 09 27 . 16 49
That better?
20000927 means 27th September 2000, and 1649 is in 24-hour clock format, IE 4:49PM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.