About Ramadan

you are actually recommended not to travel at all during Ramadan unless it's an emergency.

Also for short travels and while you are on the way, you don't have to fast.

That's what I know

You don't have to fast when you travel

Deleting this because I'm not sure of this information.

Muslims are allowed to eat and drink after the call of prayer of Maghrib which coincides with sunset, I think? It doesn't actually have anything to do with sunset. The fast starts from the first prayer(Fajr) and ends with the fourth (Maghrib).