# File lib/active_support/vendor/tzinfo-0.3.12/tzinfo/timezone_period.rb, line 178
    def eql?(p)
      p.respond_to?(:start_transition) && p.respond_to?(:end_transition) &&
        p.respond_to?(:offset) && start_transition.eql?(p.start_transition) &&
        end_transition.eql?(p.end_transition) && offset.eql?(p.offset)
    end