You don't understand the startdates?
Take, for example, 20101203.2142
Let me stick some spaces in some helpful places:
2010 12 03 . 21 42
That better?
20101203 means 3rd December 2010, and 2142 is in 24-hour clock format, IE 9:42PM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.