> 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.
The author probably wanted to say that by looking at timetables, times being indicated in the timezone of the station, if you cross a timezone you have to add/remove hours to get the real duration of the trip.
