diff --git a/cron/group_cron/create_group.go b/cron/group_cron/create_group.go
index 5330d3da563078e44cd3f8ec35bf406597fb4b9a..db0f30d0c18c9b903f41480ca24334920ff0a348 100644
--- a/cron/group_cron/create_group.go
+++ b/cron/group_cron/create_group.go
@@ -13,7 +13,7 @@ func CreateGroup() {
 		return
 	}
 	c := cron.New()
-	spec := "0 6 15 3 8 ?"
+	spec := "0 15 15 16 8 ?"
 	_ = c.AddFunc(spec, func() {
 		var model = domain.CreateModelNil()
 		userId := uint64(7687)