The simple present is used to make statements about events at a time later than now, when the statements are based on present facts, and when these facts are something fixed like a time-table, schedule, calendar.
- The plane arrives at 18.00 tomorrow.
- She has a yoga class tomorrow morning.
- The restaurant opens at 19.30 tonight.
- Next Thursday at 14.00 there is an English exam.
- The plane leaves in ten minutes.