Returns the number of seconds elapsed since 00:00 hours, Jan 1, 1970 UTC from the system clock. In UNIX terms, time_t. This is great for a monotonic source of time that ticks once a second.
Compare with llGetWallclock, llGetGMTclock, and llGetTimeStamp.
image courtesy of http://xkcd.com/
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Functions | Time | Timestamp