You don't understand the startdates?
Take, for example, 20260301.0736
Let me stick some spaces in some helpful places:
2026 03 01 . 07 36
That better?
20260301 means 1st March 2026, and 0736 is in 24-hour clock format, IE 7:36AM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.