Time of day in triggers

Say I wanted to make a trigger that activates at 17:59 (5:59 pm) would I put in 17.59? (this seems like a noob question, but i had put in 17.55 once and the trigger ran at 5:24 (about))

Like real time, game time uses the same method.
As sound does, you cant set a sound duration to 1:30 by typing 1:30, you have to type 90 seconds.
Same with time, 5:00 in the night is 17, 12:00 in the night is 24:00

18.34 == 6:20 PM
8.21 == 8:13 AM

Basically, the integer front digit is the whole value of time, and the float is the % of that hour that it's in.
(.21 == 21%, 21% of 60 == 12.6 roughly, so 13)

Hopefully that was clear enough. :P

Made sense for the most part, thanks. I'll do a little math (it burns! I'm on summer vacation I shouldn't be learning!) Thanks a bunch. They should have explained that in the WE. Sheesh.