I don't want to wait 12 hours to test and find out (currently 01am GMT)..
With llGetTimestamp() is the HOURS listed in 24-hour format (eg: 13 == 1pm), or just 1-12?
example spew: 2007-02-06T01:12:07.937483Z
--Bos
Edit
nm, found a sample, it's 24hr format.