diff --git a/src/repositories/shuttle/eta/InMemorySelfUpdatingETARepository.ts b/src/repositories/shuttle/eta/InMemorySelfUpdatingETARepository.ts
index 917e6bc..868178f 100644
--- a/src/repositories/shuttle/eta/InMemorySelfUpdatingETARepository.ts
+++ b/src/repositories/shuttle/eta/InMemorySelfUpdatingETARepository.ts
@@ -110,23 +110,24 @@ export class InMemorySelfUpdatingETARepository extends BaseInMemoryETARepository
 
     const oneWeekAgo = new Date(referenceCurrentTime.getTime() - (60 * 60 * 24 * 7 * 1000));
     const oneDayAgo = new Date(referenceCurrentTime.getTime() - (60 * 60 * 24 * 1000));
-    const oneHourAgo = new Date(referenceCurrentTime.getTime() - (60 * 60 * 1000));
+    const twoHoursAgo = new Date(referenceCurrentTime.getTime() - (60 * 60 * 1000));
 
+    const twoHoursInMs = 120 * 60 * 1000;
     const travelTimeSeconds = await this.getAverageTravelTimeSecondsWithFallbacks({
       routeId: shuttle.routeId,
       fromStopId: currentStop.stopId,
       toStopId: nextStop.stopId,
     }, [
       {
-        from: oneWeekAgo,
-        to: new Date(oneWeekAgo.getTime() + (60 * 60 * 1000))
+        from: new Date(oneWeekAgo.getTime() - (twoHoursInMs)),
+        to: oneWeekAgo,
       },
       {
-        from: oneDayAgo,
-        to: new Date(oneDayAgo.getTime() + (60 * 60 * 1000))
+        from: new Date(oneDayAgo.getTime() - (twoHoursInMs)),
+        to: oneDayAgo,
       },
       {
-        from: oneHourAgo,
+        from: twoHoursAgo,
         to: new Date(),
       }
     ]);
diff --git a/src/repositories/shuttle/eta/RedisSelfUpdatingETARepository.ts b/src/repositories/shuttle/eta/RedisSelfUpdatingETARepository.ts
index 4f61368..0514ec2 100644
--- a/src/repositories/shuttle/eta/RedisSelfUpdatingETARepository.ts
+++ b/src/repositories/shuttle/eta/RedisSelfUpdatingETARepository.ts
@@ -133,19 +133,19 @@ export class RedisSelfUpdatingETARepository extends BaseRedisETARepository imple
     const oneDayAgo = new Date(referenceCurrentTime.getTime() - (60 * 60 * 24 * 1000));
     const twoHoursAgo = new Date(referenceCurrentTime.getTime() - (120 * 60 * 1000));
 
-    const twoHoursMs = 120 * 60 * 1000;
+    const twoHoursInMs = 120 * 60 * 1000;
     const travelTimeSeconds = await this.getAverageTravelTimeSecondsWithFallbacks({
       routeId: shuttle.routeId,
       fromStopId: currentStop.stopId,
       toStopId: nextStop.stopId,
     }, [
       {
-        from: oneWeekAgo,
-        to: new Date(oneWeekAgo.getTime() + (twoHoursMs))
+        from: new Date(oneWeekAgo.getTime() - (twoHoursInMs)),
+        to: oneWeekAgo,
       },
       {
-        from: oneDayAgo,
-        to: new Date(oneDayAgo.getTime() + (twoHoursMs))
+        from: new Date(oneDayAgo.getTime() - (twoHoursInMs)),
+        to: oneDayAgo,
       },
       {
         from: twoHoursAgo,
diff --git a/src/repositories/shuttle/eta/__tests__/SelfUpdatingETARepositorySharedTests.test.ts b/src/repositories/shuttle/eta/__tests__/SelfUpdatingETARepositorySharedTests.test.ts
index f490b0f..b260e3e 100644
--- a/src/repositories/shuttle/eta/__tests__/SelfUpdatingETARepositorySharedTests.test.ts
+++ b/src/repositories/shuttle/eta/__tests__/SelfUpdatingETARepositorySharedTests.test.ts
@@ -121,9 +121,9 @@ describe.each(repositoryImplementations)('$name', (holder) => {
       const { route, systemId, stop1, stop2, stop3 } = await setupRouteAndOrderedStops();
 
       // Populating travel time data
-      const firstStopArrivalTime = new Date(2025, 0, 1, 12, 0, 0);
-      const secondStopArrivalTime = new Date(2025, 0, 1, 12, 15, 0);
-      const thirdStopArrivalTime = new Date(2025, 0, 1, 12, 20, 0);
+      const firstStopArrivalTime = new Date(2025, 0, 1, 11, 0, 0);
+      const secondStopArrivalTime = new Date(2025, 0, 1, 11, 15, 0);
+      const thirdStopArrivalTime = new Date(2025, 0, 1, 11, 20, 0);
 
       repository.setReferenceTime(currentTime);
       repository.startListeningForUpdates();
@@ -185,8 +185,8 @@ describe.each(repositoryImplementations)('$name', (holder) => {
       );
     }, 60000);
 
-    test("uses previous hour fallback calculation when no data available from one day ago", async () => {
-      const shuttleSecondArrivalTimeAtFirstStop = new Date(2025, 0, 1, 13, 5, 0);
+    test("uses previous two-hour fallback calculation when no data available from one day ago", async () => {
+      const shuttleSecondArrivalTimeAtFirstStop = new Date(2025, 0, 1, 12, 5, 0);
       const currentTime = new Date(shuttleSecondArrivalTimeAtFirstStop.getTime() + 7 * 60 * 1000);
       await assertEtaIsValidGivenCurrentTimeAndSecondArrivalTime(
         currentTime, shuttleSecondArrivalTimeAtFirstStop