def utc_offset(time = nil)
      time ||= Time.now
      time = sanitize(time)

      rule_for_utc(time)[OFFSET_BIT]
    end
def utc_offset(time = nil)
      time ||= Time.now
      time = sanitize(time)

      rule_for_utc(time)[OFFSET_BIT]
    end
Return the UTC offset (in seconds) for the given time.

 @param time [#to_time] (Time.now) the source time
 @return [Integer] the UTC offset (in seconds) in the local timezone