If you get on a train at 10:30 p.m. and arrive at your destination the next morning, does that use two days of your pass or only one?
One day, so long as you don't change trains between 22:30 and 00:00. On your pass you enter the date for the new day that begins at midnight.
Susan, I found this on RS site.
When traveling on a direct overnight train (no change of train) departing after 7pm, the next day’s date must be entered. In such cases, travel from 7pm and midnight of the following day is included and considered as one day of travel.If the overnight trip requires a train change before midnight, traveler will use 2 travel days.