What is a travel day?
A travel day is a 24-hour period during which you can travel on trains with your Interrail Pass. It lasts from 00:00 (midnight) to 23:59 on the same calendar day. On every travel day, you have access to the train networks where your Interrail Pass is valid. On average, it won't take you more than 1 travel day to go from one city to the next. For instance, you can use 1 travel day to get from Copenhagen to Zagreb or from Amsterdam to Munich.