diff --git a/src/game/lib/util/date_util.js b/src/game/lib/util/date_util.js
index bae3a69..25b9a37 100644
--- a/src/game/lib/util/date_util.js
+++ b/src/game/lib/util/date_util.js
@@ -3,7 +3,10 @@ function DateUtil() {
 
 DateUtil.getYYYYMMDD = function(date) {
 	// return date.toISOString().slice(0,10);
-	return date.getFullYear() + "-" + (date.getMonth() + 1) + "-" + date.getDate();
+	var yymmdd = date.getFullYear() + "-"
+		+ ("0" + (date.getMonth() + 1)).slice(-2) + "-"
+		+ ("0" + date.getDate()).slice(-2);
+	return yymmdd;
 }
 
 DateUtil.getHHMMSS = function(date) {