This might not be ideal but so far it allows me to more easily sort dates and filter dates in Angular.

From the Laravel model I add these two methods

     * See docs
    public function getDates()
        return array('created_at');

    public function getCreatedAtAttribute($attr) {
        return Carbon::parse($attr)->timestamp; //Change the format to whichever you desire

Then in Angular I can use the filters

{{ vm.created_at | date:'medium'}}