diff --git a/admin/static/js/app.js b/admin/static/js/app.js
index e02d53d2..4c768e59 100644
--- a/admin/static/js/app.js
+++ b/admin/static/js/app.js
@@ -520,7 +520,7 @@ angular.module("FICApp")
 	$scope.v = Version.get();
     })
 
-  .controller("TimestampController", function($scope, $interval, Timestamp) {
+    .controller("TimestampController", function($scope, $interval, Timestamp) {
       $scope.t = Timestamp.get();
       var refresh = function() {
 	$scope.t = Timestamp.get();
@@ -669,7 +669,7 @@ angular.module("FICApp")
 	    });
 	}
 	$scope.launchChallenge = function() {
-	    var ts = Date.now() - Date.now() % 60000;
+	    var ts = $rootScope.getSrvTime().getTime() - $rootScope.getSrvTime().getTime() % 60000;
 	    var d = new Date(ts + 120000);
 	    this.config.start = d.toISOString();
 	    var f = new Date(ts + 120000 + this.duration * 60000);
@@ -684,7 +684,7 @@ angular.module("FICApp")
           $rootScope.settings.activateTime = this.activateTime;
         }
         $scope.updActivateTime = function(modulo) {
-            var ts = Math.floor((new Date(this.config.end) - Date.now() - (60000 * modulo / 2)) / (60000 * modulo)) * (60000 * modulo);
+            var ts = Math.floor((new Date(this.config.end) - $rootScope.getSrvTime().getTime() - (60000 * modulo / 2)) / (60000 * modulo)) * (60000 * modulo);
 	    var d = new Date(this.config.end) - ts;
 	    this.activateTime = new Date(d).toISOString();
             this.updateActivateTime();
@@ -1184,7 +1184,7 @@ angular.module("FICApp")
 		$scope.display.customCountdown = {
 		    show: true,
 		    shadow: "#E8CF5C",
-		    end: new Date(Date.now() + 1802000).toISOString(),
+		    end: new Date($rootScope.getSrvTime().getTime() + 1802000).toISOString(),
 		    before: "Heure joyeuse : chaque résolution compte double !",
 		    after: "Heure joyeuse terminée !",
 		}
@@ -1193,7 +1193,7 @@ angular.module("FICApp")
 		$scope.display.customCountdown = {
 		    show: true,
 		    shadow: "#3DD28F",
-		    end: new Date(Date.now() + 902000).toISOString(),
+		    end: new Date($rootScope.getSrvTime().getTime() + 902000).toISOString(),
 		    before: "Quart d'heure facile : indices dévoilés !",
 		    after: "Quart d'heure facile terminée !",
 		}
@@ -1201,13 +1201,13 @@ angular.module("FICApp")
 	};
 
 	$scope.genSceneCountdownDate = function(scene, duration) {
-	    scene.params.end = (new Date(Date.now() + duration)).toISOString();
+	    scene.params.end = (new Date($rootScope.getSrvTime().getTime() + duration)).toISOString();
 	}
         $scope.genCustomCountdownDate = function(duration) {
 	    if (duration == null) {
 	        $scope.display.customCountdown.end = $rootScope.settings.activateTime;
 	    } else {
-	        $scope.display.customCountdown.end = (new Date(Date.now() + duration)).toISOString();
+	        $scope.display.customCountdown.end = (new Date($rootScope.getSrvTime().getTime() + duration)).toISOString();
 	    }
 	}