diff --git a/artifacts/tx-os/src/pages/executive-meetings.tsx b/artifacts/tx-os/src/pages/executive-meetings.tsx
index 93456a9d..5304b093 100644
--- a/artifacts/tx-os/src/pages/executive-meetings.tsx
+++ b/artifacts/tx-os/src/pages/executive-meetings.tsx
@@ -2146,6 +2146,7 @@ function ScheduleSection({
       // never in `orderedMeetings`, so they keep their existing tuple.
       const queryKey = ["/api/executive-meetings", date] as const;
       const previous = qc.getQueryData<DayResponse>(queryKey);
+      const previousOptimisticOrder = optimisticOrder;
       const slotById = new Map<number, { startTime: string | null; endTime: string | null; dailyNumber: number }>();
       newOrder.forEach((id, i) => {
         const slotMeeting = orderedMeetings[i];
@@ -2173,6 +2174,12 @@ function ScheduleSection({
             }
           : prev,
       );
+      // #489: also drive the rendered row order so slot[i] visually
+      // shows newOrder[i]. Without this, the array order in cache
+      // remains the pre-drag order and times appear rotated against
+      // the wrong row content (e.g. 11:00, 09:00, 10:00). Cleared on
+      // refetch by the useEffect on `meetings`.
+      setOptimisticOrder(newOrder);
       const expectedUpdatedAt: Record<string, string> = {};
       for (const m of orderedMeetings) {
         expectedUpdatedAt[String(m.id)] = m.updatedAt;
@@ -2193,6 +2200,9 @@ function ScheduleSection({
         if (previous !== undefined) {
           qc.setQueryData<DayResponse>(queryKey, previous);
         }
+        // #489: restore the prior optimistic order on rollback so a
+        // failed rotate doesn't leave the UI in the post-drop order.
+        setOptimisticOrder(previousOptimisticOrder);
         const msg = err instanceof Error ? err.message : String(err);
         toast({
           title: t("common.error"),
@@ -2204,7 +2214,7 @@ function ScheduleSection({
         setReordering(false);
       }
     },
-    [orderedMeetings, date, qc, refreshDay, toast, t],
+    [orderedMeetings, optimisticOrder, date, qc, refreshDay, toast, t],
   );
 
   // #486 → #489: Move up / Move down were retired in favour of