More:
Message: SessionInformationRequest
Message: SessionInformationReport
Message: SessionSegment
Message: SessionSchedule
Message: TradingDay
Message: SessionDay
Message: SessionHoliday
Message: SessionTimeRangeRequest
Message: SessionTimeRangeReport
Message: SessionTimeRange
Message: TradingDayTimeRangeRequest
Message: TradingDayTimeRangeReport
Message: TradingDayTimeRange
Independent Enums