[Nogaruk]

Edit: I think I miss read what you were asking. You're looking for the tamriel world time?

if so, I didn't see you mention
GetGameTimeMilliseconds() - Returns: integer gameTimeInMilliseconds

There are a few relative globals and functions as well as Formatting for time and clock time. Probably isn't a difference, but might be worth exploring. I'm not sure we have access to the games world time, though.

I don't recall anywhere in the game that they show game time. It seems as if everything they do is based on real world time. The only thing I can even think of that is game time related is the day/night cycle. So your best bet might actually be to use the midnight function, figure out how long an in-game day takes, and adjust for it yourself.

These may be real world related
GetTimeString() - Returns: string currentTimeString
GetFormattedTime() - Returns: integer formattedTime
EVENT_SHOW_TIME (bool state)
SI_STR_TIME_DESC_DAYS_HOURS_MINUTES_AND_SECONDS
TIME_FORMAT_STYLE_RELATIVE_TIMESTAMP - Not sure what relative is to in this case