You don't understand the startdates?
Take, for example, 20260710.0054
Let me stick some spaces in some helpful places:
2026 07 10 . 00 54
That better?
20260710 means 10th July 2026, and 0054 is in 24-hour clock format, IE 12:54AM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.