In 2020, Pokémon GO introduced the concept of Incense Days. These are days where, for several hours, specific types of Pokémon will appear, cycled through based on the hour. Click the Incense Day for more details

Beldum DayBeldum Day March 14th 2021 Beldum
Mareep DayMareep Day January 24th 2021 Mareep
May 2020May 2020 May 17th 2020 Carvanha
April 2020April 2020 April 19th 2020 Sentret