# File lib/ri_cal/property_value/date_time/timezone_support.rb, line 86
        def in_time_zone(new_zone)
          new_zone = timezone_finder.find_timezone(new_zone)
          return self if tzid == new_zone.identifier
          if has_local_timezone?
            new_zone.utc_to_local(utc)
          elsif utc?
            new_zone.utc_to_local(self)
          else # Floating time
            DateTime.new(timezone_finder, :value => @date_time_value, :tzid => new_zone.identifier)
          end
        end