You don't understand the startdates?
Take, for example, 20091123.1914
Let me stick some spaces in some helpful places:
2009 11 23 . 19 14
That better?
20091123 means 23rd November 2009, and 1914 is in 24-hour clock format, IE 7:14PM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.