You don't understand the startdates?
Take, for example, 20010430.1056
Let me stick some spaces in some helpful places:
2001 04 30 . 10 56
That better?
20010430 means 30th April 2001, and 1056 is in 24-hour clock format, IE 10:56AM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.