diff --git a/backend/src/main/java/com/openisle/service/PostService.java b/backend/src/main/java/com/openisle/service/PostService.java
index 56bb82650..69c071a92 100644
--- a/backend/src/main/java/com/openisle/service/PostService.java
+++ b/backend/src/main/java/com/openisle/service/PostService.java
@@ -110,7 +110,7 @@ public class PostService {
         for (LotteryPost lp : lotteryPostRepository.findByEndTimeAfterAndWinnersIsEmpty(now)) {
             ScheduledFuture<?> future = taskScheduler.schedule(
                     () -> finalizeLottery(lp.getId()),
-                    java.util.Date.from(lp.getEndTime().atZone(java.time.ZoneOffset.UTC).toInstant()));
+                    java.util.Date.from(java.sql.Timestamp.valueOf(lp.getEndTime()).toInstant()));
             scheduledFinalizations.put(lp.getId(), future);
         }
         for (LotteryPost lp : lotteryPostRepository.findByEndTimeBeforeAndWinnersIsEmpty(now)) {
@@ -210,7 +210,8 @@ public class PostService {
         if (post instanceof LotteryPost lp && lp.getEndTime() != null) {
             ScheduledFuture<?> future = taskScheduler.schedule(
                     () -> finalizeLottery(lp.getId()),
-                    java.util.Date.from(lp.getEndTime().atZone(java.time.ZoneOffset.UTC).toInstant()));            scheduledFinalizations.put(lp.getId(), future);
+                    java.util.Date.from(java.sql.Timestamp.valueOf(lp.getEndTime()).toInstant()));
+            scheduledFinalizations.put(lp.getId(), future);
         }
         return post;
     }