GameTime function

[Tyx]

Hello,
I want to write a little AddOn to show the ingame time.
This isn't exactly a lua problem but I couldn't find a better sub forum than this one - sry for that.

It is more an API problem. I couldn't find a function which gives me back the current ingame time.
Is there a function like this in the API? I tried many (but maybe overlooked some):

Shows:
how long you are playing:
GetFrameTimeMilliseconds() = GetGameTimeMilliseconds() ~ GetTimeString()

is self explainatory
GetSecondsSinceMidnight()

Don't know exactly what it does... delta is usually a difference between two things but... no idea between which times^^
GetFrameDeltaTimeSeconds()

I think this is for the alliance wars how long the campaign last
GetGameTimeRemaining()

Hope you can help me

I think this addon will be pretty usefull for vamp and ww hunts - it would be nice to know which moon phase it is right now but this will probably not be an api function.