Try to identify your local ethnic/cultural organizations, and follow their events schedules.
There are pretty large Indian and Vietnamese populations where I live, and they each have an association to share their cultural highlights with the larger pop. The Holi and Festival of Lights celebrations (Indian) and Lunar New Year (Vietnamese) were all an absolute blast and had amazing food.
Good way to get intel on your local organizations is to hit up the respective restaurants/grocery stores from whichever cultures are well represented in your area - look for pamphlets and ask the staff.
As a pasty white dude who’s only recently started tuning in to events like that, everything feels very new and unique - highly recommend!