You don't understand the startdates?
Take, for example, 20250719.0117
Let me stick some spaces in some helpful places:
2025 07 19 . 01 17
That better?
20250719 means 19th July 2025, and 0117 is in 24-hour clock format, IE 1:17AM
Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.