The Netherlands
Do you want to be sure your package arrives before Thursday 5 December? Place no later than 3 December your order.
Do you want to be sure your package arrives before Christmas on Wednesday 25 December? Place no later then 21 December your order.
I will ship parcels at 23 December (Monday) but can't guarantee it will be in time.
Here is an overview when PostNL delivers packages during the holidays:
International orders
Want to know if your order will still be in time for Christmas? Please check the deadlines per country here:
English 
Nederlands