This year’s Pokémon GO Fest Chicago is set to take place from June 13 to June 16 in Chicago, Illinois. Niantic has a host of special activities planned for attendees, including some surprises. The Mythical Pokémon Jirachi will also make its Pokémon GO debut next week at the Pokémon GO Fest 2019 in Chicago, Illinois. Fans who won’t be able to make it will eventually get a chance to encounter Jirachi later this year. In celebration of Pokémon GO Fest 2019, the Water-type Pokémon Horsea will begin appearing more frequently globally on June 13 at 9 a.m. PDT. If you’re lucky, you might even encounter a Shiny Horsea!