diff --git a/collect.go b/collect.go
index f4f13e5..01272d4 100644
--- a/collect.go
+++ b/collect.go
@@ -16,20 +16,28 @@ import (
 func collectCopyCountLiveAnchors(cxt *WorkerContext) {
 	defer cxt.Done()
 
+	var err error
+	var ok bool
 	for !ps.IsClose() {
 
 		liveanchor := &CountLiveAnchors{}
-		ok, err := db.T.CountLiveAnchors.OrderBy("create_at desc").Limit(1).Get(liveanchor)
+		ok, err = db.T.CountLiveAnchors.OrderBy("create_at desc").Limit(1).Get(liveanchor)
 		if ok || (ok == false && err == nil) {
 
 			var cur *mongo.Cursor
+			var last time.Time
 			if ok == false {
-				cur, err = mdb.C.CountLiveAnchors.Find(context.TODO(), bson.M{"create_at": bson.M{"$gt": "2020-05-30"}})
+				last, err = time.ParseInLocation("2006-01-02", "2020-05-30", time.Local)
+				if err != nil {
+					panic(err)
+				}
+				cur, err = mdb.C.CountLiveAnchors.Find(context.TODO(), bson.M{"create_at": bson.M{"$gt": last}})
 			} else {
-				last := liveanchor.CreateAt
+				last = liveanchor.CreateAt
 				log.Println("last: ", last)
 				cur, err = mdb.C.CountLiveAnchors.Find(context.TODO(), bson.M{"create_at": bson.M{"$gt": last}})
 			}
+
 			if err != nil {
 				log.Println(err)
 				ps.Wait(time.Second * 5)