standard (TZInfo::TimezonePeriod)

    # File lib/icalendar/tzinfo.rb, line 103
            def standard
                std = Icalendar::Standard.new
                if dst?
                    std.timezone_name = abbreviation.to_s.sub("DT","ST")
                    std.timezone_offset_from = end_transition.offset_from
                    std.timezone_offset_to = end_transition.offset_to
                    std.dtstart = end_transition.dtstart
                    std.recurrence_rules = end_transition.rrule
                else
                    std.timezone_name = abbreviation.to_s
                    std.timezone_offset_from = start_transition.offset_from
                    std.timezone_offset_to = start_transition.offset_to
                    std.dtstart = start_transition.dtstart
                    std.recurrence_rules = start_transition.rrule
                end
                return std
            end