https://www.gamespot.com/articles/pokemon-go-community-day-april-2018-start-times-bo/1100-6458190/

Pokemon Go's next real-world event is right around the corner. This month's Community Day takes place this Sunday, April 15, and gives players around the world a chance to earn bonuses and obtain a Pokemon that knows a special event-exclusive move.

As usual, the event will only run during a three-hour window, which begins at different times depending on where you live. The event kicks off in the US at 11 AM PT / 2 PM ET and ends at 2 PM PT / 5 PM ET; in Europe and Africa, it runs from 10 AM - 1 PM UTC; and in the Asia-Pacific region, the event lasts from 12 PM - 3 PM JST.