You don't understand the startdates?
Take, for example, 20110807.1020
Let me stick some spaces in some helpful places:
2011 08 07 . 10 20
That better?
20110807 means 7th August 2011, and 1020 is in 24-hour clock format, IE 10:20AM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.