Eevee Day, which happens every year on Nov. 21, has kicked off in Japan, with the Pokémon Company releasing several events for fans to partake in as they celebrate the popular Pokémon's special day. Celebrating the day: As part of the celebration, the Pokémon Company released an "Eevee Mass Outbreak" event in its game “Pokémon Scarlet and Violet,” where players will frequently encounter the adorable creature thanks to its increased spawn rate across the Paldea region and the land of Kitakami. The event, which runs Nov. 17-23, will give players the chance to catch Eevee with different marks depending on where they captured the creature.