diff --git a/shroom_server.go b/shroom_server.go
index 2ba287e..88978b3 100644
--- a/shroom_server.go
+++ b/shroom_server.go
@@ -41,7 +41,8 @@ func dumpData(db *sql.DB, multiplier int64) func(http.ResponseWriter, *http.Requ
 			return
 		}
 		offset := int64(count) * multiplier
-		t := now - offset
+		t := now*1000 - offset
+		log.Println("req start ", t)
 		msg, err := s.GetRows(db, t)
 		if err != nil {
 			w.WriteHeader(500)