What is a travel day?
A travel day lasts 24 hours from midnight to midnight. On each travel day you have access to the train networks and participating ferry companies where your Eurail pass is valid.
There are 2 types of Eurail passes with a different number of travel days. The right pass for you depends on how much time you expect to spend traveling by train during your European trip.
Travel days with a flexi pass
If you have a flexi pass, e.g. a Global Pass - 15 days within 2 months, you can hop on and off trains on any 15 travel days within a period of 2 months. For example, if your pass is valid from June 1 to July 30, you can choose any 15 days during this period to travel by train. Travel days do not have to be consecutive and you decide during your trip when you use them.
You must write in the date of each travel day in the travel calendar on your pass before boarding the first train, free bus or free ferry of each day.
Travel days with a continuous pass
If you have a continuous pass, e.g. Global Pass - 15 days continuous, you have 15 travel days and can take advantage of train travel during each of these days. For example, if your pass is valid from September 1 to September 15, you can travel by train on each of these days.
With the continuous pass you don't need to fill in the dates on which you travel.
7 p.m. rule
When traveling on a direct night train that departs after 7 p.m. (19:00) and arrives at its final stop after 4 a.m. (04:00), you only need to enter the arrival date in the travel calendar, even if you leave the train before 4 a.m.. This way you get 5 hours of travel for free. This is known as the 7 p.m. rule.