diff --git a/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/task/RoomDailyTaskQueryExe.java b/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/task/RoomDailyTaskQueryExe.java
index 2912f92f..b9ff4f24 100644
--- a/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/task/RoomDailyTaskQueryExe.java
+++ b/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/task/RoomDailyTaskQueryExe.java
@@ -12,9 +12,9 @@ import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Component;
 import org.springframework.util.CollectionUtils;
 
+import java.sql.Timestamp;
 import java.time.LocalDate;
 import java.time.ZonedDateTime;
-import java.time.temporal.ChronoUnit;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -33,7 +33,7 @@ public class RoomDailyTaskQueryExe {
         List<RoomDailyTaskConfig> configs = taskDatabaseService.listEnabledConfigs(taskCategory);
 
         RoomDailyTaskListCO result = new RoomDailyTaskListCO();
-        result.setCountdownSeconds(calcCountdownSeconds());
+        result.setCountdown(calcCountdownSeconds());
 
         if (CollectionUtils.isEmpty(configs)) {
             result.setTasks(new ArrayList<>());
@@ -59,11 +59,11 @@ public class RoomDailyTaskQueryExe {
         return result;
     }
 
-    /** 计算距沙特时间今日午夜的剩余秒数 */
-    private long calcCountdownSeconds() {
+    /** 计算沙特时间今日午夜的时间戳 */
+    private Timestamp calcCountdownSeconds() {
         ZonedDateTime now = ZonedDateTimeAsiaRiyadhUtils.now();
         ZonedDateTime midnight = now.toLocalDate().plusDays(1).atStartOfDay(now.getZone());
-        return ChronoUnit.SECONDS.between(now, midnight);
+        return Timestamp.from(midnight.toInstant());
     }
 
     private RoomDailyTaskCO buildTaskCO(RoomDailyTaskConfig config, List<RoomDailyTaskTier> tiers, RoomDailyTaskProgress progress) {
diff --git a/rc-service/rc-service-other/other-client/src/main/java/com/red/circle/other/app/dto/clientobject/task/RoomDailyTaskListCO.java b/rc-service/rc-service-other/other-client/src/main/java/com/red/circle/other/app/dto/clientobject/task/RoomDailyTaskListCO.java
index 05b11e50..282b9e98 100644
--- a/rc-service/rc-service-other/other-client/src/main/java/com/red/circle/other/app/dto/clientobject/task/RoomDailyTaskListCO.java
+++ b/rc-service/rc-service-other/other-client/src/main/java/com/red/circle/other/app/dto/clientobject/task/RoomDailyTaskListCO.java
@@ -2,6 +2,7 @@ package com.red.circle.other.app.dto.clientobject.task;
 
 import lombok.Data;
 
+import java.sql.Timestamp;
 import java.util.List;
 
 /**
@@ -11,7 +12,7 @@ import java.util.List;
 public class RoomDailyTaskListCO {
 
     /** 距当日结束的剩余秒数（沙特时间午夜重置） */
-    private Long countdownSeconds;
+    private Timestamp countdown;
 
     private List<RoomDailyTaskCO> tasks;
 }