diff --git a/StorrageBackend.py b/StorrageBackend.py
index 2828757..33f1d98 100644
--- a/StorrageBackend.py
+++ b/StorrageBackend.py
@@ -49,6 +49,7 @@ def sync_to_database(players, win):
             known_players[p].wins += 1
         known_players[p].games += 1
         known_players[p].lastUpdate = datetime.now()
+
     updatePlayerRanks()
 
 #############################################################
@@ -193,3 +194,10 @@ def getRankRange(start, end, revalidateRanks=False):
     if start > len(playerRankList) or start >= end:
         return []
     return playerRankList[start:end]
+
+def hasChanged(time):
+    '''Indicates to a http-querier if the availiable data has changed'''
+    if last_rank_update > time:
+        return "True"
+    else:
+        return "False"
diff --git a/httpAPI.py b/httpAPI.py
index 2230513..36c4e35 100644
--- a/httpAPI.py
+++ b/httpAPI.py
@@ -37,3 +37,9 @@ def findPlayer():
     string = flask.request.args.get("string")
     players = SB.findPlayer(string)
     return "|".join([pt[0].serialize() + "," + str(pt[1]) for pt in players])
+
+@app.route('/haschanged')
+def hasChanged():
+    string = flask.request.args.get("time")
+    # TODO get time with timezone
+    return SB.hasChanged(localizedTime)