In 2018, Pokémon GO introduced the concept of Raid Days. These are days where, for three hours, a certain Pokémon will dominate raids at every single Pokémon Gym in the game with a three hour long timer. Each region has the event at different times. Click the Raid Day for more details

PictureNameDurationFocusSpecial Move
Mega Kangaskhan DayMega Kangaskhan Day May 1st 2022
Kanto DayKanto Day February 28th 2021
Alolan Marowak DayAlolan Marowak Day October 31st 2020 Marowak - Shadow Bone
Pinsir DayPinsir Day June 28th 2020
Pokemon DayPokemon Day March 1st 2020 Gengar - Lick
Gengar - Psychic
Lickitung DayLickitung Day February 15th 2020 Lickitung - Body Slam
Lickilicky - Body Slam
Evolution Event DayEvolution Event Day December 7th 2019
Suicune DaySuicune Day August 17th 2019 Suicune
Entei DayEntei Day July 14th 2019 Entei
Raikou DayRaikou Day June 29th 2019 Raikou
Lapras DayLapras Day May 25th/26th 2019 Lapras Lapras - Ice Shard
Lapras - Ice Beam
Gengar DayGengar Day November 3rd 2018 Gengar Gengar - Lick
Gengar - Psychic
Moltres DayMoltres Day September 8th 2018 Moltres Moltres - Sky Attack
Zapdos DayZapdos Day July 21st 2018 Zapdos Zapdos - Thunder Shock
Articuno DayArticuno Day July 7th 2018
August 4th 2018
Articuno Articuno - Hurricane