Pokémon Go: Season of Celebration

Description (IGDB)

The first implementation of seasons intersected with the Winter season in Northern Hemisphere and Summer season in the Southern Hemisphere. It intersected with the GO Beyond update which added Kalos Pokémon, Levels 41 to 50. A theme of this season is celebrating Pokémon from all regions with events focused on each of them. The event will end with a brand new global event experience as the 25th anniversary of Pokémon approaches