You don't understand the startdates?
Take, for example, 20251123.1714
Let me stick some spaces in some helpful places:
2025 11 23 . 17 14
That better?
20251123 means 23rd November 2025, and 1714 is in 24-hour clock format, IE 5:14PM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.