{{data.timestamp | date: "yyyy-MM-dd HH:mm:ss Z" : UTC}}

$filter('date')(data.timestamp,'yyyy-MM-dd HH:mm:ss Z', UTC);

.filter('newDate', [function() {
    return function(date) {
        //date format;
        return date.getDate() + '-' + (+date.getMonth() + 1) + '-' + date.getFullYear();
    };
}])

//time = new Date;
{{time | newDate}}

3-9-2015