utc?() public

Returns true if time represents a time in UTC (GMT).

t = Time.now                        #=> Wed Apr 09 08:56:04 CDT 2003
t.utc?                              #=> false
t = Time.gm(2000,"jan",1,20,15,1)   #=> Sat Jan 01 20:15:01 UTC 2000
t.utc?                              #=> true

t = Time.now                        #=> Wed Apr 09 08:56:03 CDT 2003
t.gmt?                              #=> false
t = Time.gm(2000,1,1,20,15,1)       #=> Sat Jan 01 20:15:01 UTC 2000
t.gmt?                              #=> true
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