I also spend a lot of my time abroad. I work for a German company but I live in New York. I have to go to Germany in order to complete different tasks and I usually spend around three months of the year there. I don't have a car so I travel by train. I use DB Fahrplan - Deutsche Bahn Fahrplanauskunft to see when the next train will come and sure enough the train arrives at my station at the exact time that is shown on the app. I got used to it but I get homesick after a few weeks in Germany.