Duplicate transxchange timetable

I am seeing an overlapping identical central line service running at 04:35 from White City to Epping on Saturday 24th Feb.

I understand that one of these may be a base timetable, but how can I identify which one it is? One is valid for 7 days, the other for 10 days and mostly overlap.

The files are:
tfl_1-CEN-_-y05-885800.xml

		<Service>
			<ServiceCode>1-CEN-_-y05-885800</ServiceCode>
			<PrivateCode>1-CEN-_-y05-885800</PrivateCode>
			<Lines>
				<Line id="1-CEN-_-y05-885800">
					<LineName>Central</LineName>
				</Line>
			</Lines>
			<OperatingPeriod>
				<StartDate>2024-02-17</StartDate>
				<EndDate>2024-02-25</EndDate>
			</OperatingPeriod>
			<OperatingProfile>
				<RegularDayType>
					<DaysOfWeek>
						<MondayToSunday />
					</DaysOfWeek>
				</RegularDayType>
			</OperatingProfile>
			<RegisteredOperatorRef>OId_LUL</RegisteredOperatorRef>
			<StopRequirements>
				<NoNewStopsRequired />
			</StopRequirements>
			<Mode>underground</Mode>
			<Description>Ealing Broadway/West Ruislip - Liverpool Street - Epping/Hainault/Woodford</Description>
			<StandardService>
				<Origin>West Ruislip</Origin>
				<Destination>Epping</Destination>
...
	<VehicleJourney>
			<PrivateCode>tfl-1-CEN-_-y05-885800-799-T2</PrivateCode>
			<Operational>
				<VehicleType>
					<VehicleTypeCode>UT</VehicleTypeCode>
					<Description>Underground Train</Description>
				</VehicleType>
			</Operational>
			<OperatingProfile>
				<RegularDayType>
					<DaysOfWeek>
						<Saturday />
					</DaysOfWeek>
				</RegularDayType>
				<BankHolidayOperation>
					<DaysOfNonOperation>
						<AllBankHolidays />
					</DaysOfNonOperation>
				</BankHolidayOperation>
			</OperatingProfile>
			<VehicleJourneyCode>VJ_1-CEN-_-y05-885800-799-T2</VehicleJourneyCode>
			<ServiceRef>1-CEN-_-y05-885800</ServiceRef>
			<LineRef>1-CEN-_-y05-885800</LineRef>
			<JourneyPatternRef>JP_1-CEN-_-y05-885800-324-O-12</JourneyPatternRef>
			<DepartureTime>04:35:00</DepartureTime>
		</VehicleJourney>
...
	<JourneyPattern id="JP_1-CEN-_-y05-885800-324-O-12">
					<Direction>outbound</Direction>
					<Operational>
						<VehicleType>
							<VehicleTypeCode>UT</VehicleTypeCode>
							<Description>Underground Train</Description>
						</VehicleType>
					</Operational>
					<RouteRef>R_1-CEN-_-y05-885800-O-12</RouteRef>
					<JourneyPatternSectionRefs>JPS_1-CEN-_-y05-885800-324-12-O</JourneyPatternSectionRefs>
				</JourneyPattern>
...
		<Route id="R_1-CEN-_-y05-885800-O-12">
			<PrivateCode>R_1-CEN-_-y05-885800-O-12</PrivateCode>
			<Description>White City - Epping</Description>
			<RouteSectionRef>RS_1-CEN-_-y05-885800-O-12</RouteSectionRef>
		</Route>

tfl_1-CEN-_-y05-3156811.xml

<Service>
			<ServiceCode>1-CEN-_-y05-3156811</ServiceCode>
			<PrivateCode>1-CEN-_-y05-3156811</PrivateCode>
			<Lines>
				<Line id="1-CEN-_-y05-3156811">
					<LineName>Central</LineName>
				</Line>
			</Lines>
			<OperatingPeriod>
				<StartDate>2024-02-19</StartDate>
				<EndDate>2024-02-29</EndDate>
			</OperatingPeriod>
			<OperatingProfile>
				<RegularDayType>
					<DaysOfWeek>
						<MondayToSunday />
					</DaysOfWeek>
				</RegularDayType>
			</OperatingProfile>
			<RegisteredOperatorRef>OId_LUL</RegisteredOperatorRef>
			<StopRequirements>
				<NoNewStopsRequired />
			</StopRequirements>
			<Mode>underground</Mode>
			<Description>Ealing Broadway/West Ruislip - Liiverpool Street - Epping/Hainault/Woodford</Description>
			<StandardService>
				<Origin>West Ruislip</Origin>
				<Destination>Epping</Destination>
...
	<VehicleJourney>
			<PrivateCode>tfl-1-CEN-_-y05-3156811-1020-T2</PrivateCode>
			<Operational>
				<VehicleType>
					<VehicleTypeCode>UT</VehicleTypeCode>
					<Description>Underground Train</Description>
				</VehicleType>
			</Operational>
			<OperatingProfile>
				<RegularDayType>
					<DaysOfWeek>
						<Saturday />
					</DaysOfWeek>
				</RegularDayType>
				<BankHolidayOperation>
					<DaysOfNonOperation>
						<AllBankHolidays />
					</DaysOfNonOperation>
				</BankHolidayOperation>
			</OperatingProfile>
			<VehicleJourneyCode>VJ_1-CEN-_-y05-3156811-1020-T2</VehicleJourneyCode>
			<ServiceRef>1-CEN-_-y05-3156811</ServiceRef>
			<LineRef>1-CEN-_-y05-3156811</LineRef>
			<JourneyPatternRef>JP_1-CEN-_-y05-3156811-335-O-12</JourneyPatternRef>
			<DepartureTime>04:35:00</DepartureTime>
		</VehicleJourney>
...
				<JourneyPattern id="JP_1-CEN-_-y05-3156811-335-O-12">
					<Direction>outbound</Direction>
					<Operational>
						<VehicleType>
							<VehicleTypeCode>UT</VehicleTypeCode>
							<Description>Underground Train</Description>
						</VehicleType>
					</Operational>
					<RouteRef>R_1-CEN-_-y05-3156811-O-12</RouteRef>
					<JourneyPatternSectionRefs>JPS_1-CEN-_-y05-3156811-335-12-O</JourneyPatternSectionRefs>
				</JourneyPattern>
...
	<Route id="R_1-CEN-_-y05-3156811-O-12">
			<PrivateCode>R_1-CEN-_-y05-3156811-O-12</PrivateCode>
			<Description>White City - Epping</Description>
			<RouteSectionRef>RS_1-CEN-_-y05-3156811-O-12</RouteSectionRef>
		</Route>