You don't understand the startdates?
Take, for example, 20000615.1724
Let me stick some spaces in some helpful places:
2000 06 15 . 17 24
That better?
20000615 means 15th June 2000, and 1724 is in 24-hour clock format, IE 5:24PM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.