We sometimes use the simple present form to discuss future events. Especially when talking about official events that happen at a set time such as timetables, meetings, itineraries, programmes etc.
Q) "What time does the train leave?" A) "It leaves at 17.30."
Q) "What time does the meeting begin tomorrow?" A) "It begins at 8.00am."
Q) "What time do you arrive at the airport tomorrow?" A) "I arrive at 6.30pm."