You don't understand the startdates?
Take, for example, 20260824.1953
Let me stick some spaces in some helpful places:
2026 08 24 . 19 53
That better?
20260824 means 24th August 2026, and 1953 is in 24-hour clock format, IE 7:53PM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.