Pokémon GO Gigantamax Rillaboom Max Battle Day will take place on Aug. 1 from 2 to 5 p.m. local time, marking the Pokémon GO debut of Shiny Gigantamax Rillaboom. Trainers will be able to challenge Gigantamax Rillaboom in Max Battles while taking advantage of event bonuses, Timed Research and additional event-themed features throughout the three-hour event.
Source: Official Pokémon GO blog
Source: Pokemon
