> Using the shortest timetable, the distance from the > coastal centre of Porto to the Polish capital of Warsaw > can be covered in 40 hours and 33 mi

> Using the shortest timetable, the distance from the > coastal centre of Porto to the Polish capital of Warsaw > can be covered in 40 hours and 33 minutes (including time > zone changes) with just four transfers. Wait, what? How are timezones relevant? If I travel one hour across the date line, does it mean the trip took me minus 23 hours? Not that I don't care what time it is when I get off the train, but that has no bearing on the time that the distance can be covered in.