Angular http method changing the hour in datetime

I have the weirdest bug ever. I am talking to my API via angularjs and I try to update something by doing the following

  console.log('updated: ', event.startsAt);
  $http({
    method: 'PUT',
    url: baseurl + "/event/" +  event.id,
    data: {title: event.title, startsAt: moment(event.startsAt).clone().toDate(), entriesAllowed: event.entriesAllowed},
    headers: {'Content-type': 'application/json'},
    handleError: true
  })

So the problem is in the event.startsAt variable. In the console log it give me the correct time:

Sat Dec 24 2016 16:15:00 GMT+0100 (CET)

but as soon as I send it and access it with my api it gives the same datetime but minus 1 hours so

Sat Dec 24 2016 15:15:00 GMT+0100 (CET)

Any idea what this could be? I use laravel for my api and I am getting the datetime with

$event->startsAt = Carbon::parse($request->get('startsAt'), 'Europe/Amsterdam');

Things I have tried myself

• Use momentJS to change datetime to a different format.
• adding/removing timezone in Laravel.

via Chebli Mohamed