gmtime(EXPR)

     gmtime EXPR

             Converts a time as returned by the time function  to
             a  9-element  array  with  the time analyzed for the
             Greenwich timezone.  Typically used as follows:

             ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) =
                                           gmtime(time);

             All array elements are numeric,  and  come  straight
             out  of  a struct tm.  In particular this means that
             $mon has the range 0..11 and  $wday  has  the  range
             0..6.  If EXPR is omitted, does gmtime(time).