The next Pokemon Go Community Day will take place on March 23, 2019 and will feature the grass-type Pokemon Treecko! The event will also feature three hour lures and 1/4 hatch distance on eggs. The exclusive move is yet to be announced.
The event hours will be different from other Community Days. It will take place from 3:00pm to 6:00pm based on your local time. You still have the extra hour to evolve Treecko and get the exclusive move.