time
Returns the number of non-leap seconds since whatever time the 
system considers to be the epoch, suitable for feeding to 
"gmtime" and "localtime". On most systems the epoch is 00:00:00 
UTC, January 1, 1970; a prominent exception being Mac OS 
Classic which uses 00:00:00, January 1, 1904 in the current 
local time zone for its epoch.