We often use the present continuous (am/is/are + -ing) to talk about future arrangements and personal plans, especially when they are already decided or organized.
Form: subject + am/is/are + verb-ing
We usually include a future time expression: tomorrow, next week, on Friday, this evening, etc.
We use the present simple to talk about the future when we refer to fixed schedules and timetables (for example, public transportation, school or work schedules, official events).
Form: subject + base verb (in present simple)
Sometimes, both tenses can talk about the future, but they focus on different things:
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