You don't understand the startdates?
Take, for example, 20251021.0224
Let me stick some spaces in some helpful places:
2025 10 21 . 02 24
That better?
20251021 means 21st October 2025, and 0224 is in 24-hour clock format, IE 2:24AM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.