My parents went for a trip to Indonesia. A nice site has been created: geluidsnet.nl where planes can be spotted above Netherlands.
Their plane took off around 11:20 .
11:25 North of Amsterdam
11:35 Above Almere
11:39 Above the Veluwe
11:48 Somewhere above Germany
11:52 Somewhere further above Germany, just before the radar couldn't spot their plane anylonger