diff --git a/src/views/kitchen/environment/videoMonitoring/history.vue b/src/views/kitchen/environment/videoMonitoring/history.vue
index 01b9d0be..97195a2f 100644
--- a/src/views/kitchen/environment/videoMonitoring/history.vue
+++ b/src/views/kitchen/environment/videoMonitoring/history.vue
@@ -188,9 +188,9 @@ methods:{
     }, 
     defaultDateRange() {
         const end = new Date(new Date().toLocaleDateString());
-        end.setTime(end.getTime() + 10 * 60 * 60 * 1000);
+        end.setTime(end.getTime() - 15 * 60 * 60 * 1000);
         const start = new Date((new Date().toLocaleDateString()));
-        start.setTime(start.getTime()+ 8 * 60 * 60 * 1000); 
+        start.setTime(start.getTime() - 16 * 60 * 60 * 1000); 
         this.start = parseInt(start.getTime() / 1000)
         this.end = parseInt(end.getTime() / 1000)
         return [start, end]