You don't understand the startdates?
Take, for example, 20260116.0936
Let me stick some spaces in some helpful places:
2026 01 16 . 09 36
That better?
20260116 means 16th January 2026, and 0936 is in 24-hour clock format, IE 9:36AM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.