Hoenn Celebration 2018

Hoenn Celebration in 2018 was the first Hoenn Celebration event in Pokémon GO.

Features
To celebrate the recent addition of Pokémon originally discovered in the Hoenn region, only Pokémon from the Hoenn region were spawning in the wild. Alongside several Flying- and Dragon-type Pokémon appearing in Pokémon GO for the first time, the Legendary Pokémon Rayquaza became available in Raid Battles until March. Additionally, Lure Modules will remain activate for six hours.

These Pokémon were released with the start of the event:

Moreover, this Shiny Pokémon was released with the start of the event

Shop special offer
Again, new shop special offer was available in the shop from February to February, 2018.

Trivia

 * During this event, Kyogre stopped being available as a Legendary Raid Boss on February and Rayquaza started to be available as new Legendary Raid Boss from February  to March, 2018.
 * During this event, non-Hoenn region-exclusive Pokémon were still spawning in the wild, so tourists could catch them, if they happened to be in any other region with exclusive Pokémon even during the event.
 * Just like with previous event, this event hasn't got an official name as creators didn't give it anywhere when it was announced.