"At what time does the train arrive?"
Translation:Hoe laat komt de trein aan?
This was explained to me recently on YouTube as I had the same exact question...
Yes, you can, HOWEVER... Hoe laat refers to time, but wanneer refers more to date. Hoet laat makes more sense, since you're obviously dealing with time here.
But if the train comes once every few days, or someone is arriving on a train and you don't know when, you could always say "Wanneer komt de trein aan?" (in context with a conversation about people arriving in a few days, obviously)
So always use hoe laat for time of day.