Stardates Explained - 20180925.1100

You don't understand the startdates?

Take, for example, 20180925.1100

Let me stick some spaces in some helpful places:

2018 09 25 . 11 00

That better?

20180925 means 25th September 2018, and 1100 is in 24-hour clock format, IE 11:00AM

Stardates in the Star Trek universe work in an entirely different way. Wikipedia has a good explanation on how Stardates work.

Events on this stardate