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app/Http/Controllers/api/ActivityReward.php

@@ -121,8 +121,8 @@ class ActivityReward extends BaseController
                 'activity_id' => $activityId,
                 'title' => $activity->title,
                 'sub_title' => $activity->sub_title,
-                'start_time' => strtotime($activity->start_time),
-                'end_time' => strtotime($activity->end_time),
+                'start_time' => $activity->start_time,
+                'end_time' => $activity->end_time,
                 'detail_image' => $activity->detail_image,
                 'part_in_time' => $time,
                 'member_id' => $memberId,