Overnight travelling can be very efficient, as it will keep you on the move and save you a night in a hostel. If you plan it well, it will also only cost you one travel day instead of two. Below you will find some information on how to set up your Pass when taking an overnight train service.
As a general rule, you will need to have an active travel day at the time of departure of your train. This means that, if you board a train on Tuesday at 10 PM which arrives the following morning, you will only need to use a travel day for Tuesday.
However, if you change trains after midnight you will need a new travel day regardless of itinerary. Travel days always last from 00:00-23:59, so if a connecting train is taken after midnight you will need to activate a new travel day.