diff --git a/api/parts/data/events.js b/api/parts/data/events.js
index 1f49c4f2e43..d918d496367 100644
--- a/api/parts/data/events.js
+++ b/api/parts/data/events.js
@@ -619,7 +619,8 @@ function saveEventRawData(base_data, event) {
 
     // get current date (UTC), format: YYYYMMDD
     var today = new Date();
-    var date_suffix = today.toISOString().split('T')[0].replace(/-/g,'');
+    var options = {timeZone: 'Asia/Shanghai', year: 'numeric', month:'2-digit', day: '2-digit'}
+    var date_suffix = today.toLocaleDateString('zh-CN', options).replace(/\//g,'');
   
     var db_collection_name = "events_raw_" + table_suffix + '_' + date_suffix;  //table name: 'events_raw_<app_id>_<date:YYYYMMDD>'
     base_data._id = new ObjectID();