A new event, Battle Gyms Takeover is for team Mystic trainers who spoof. A reminder will be announced two hours before starting. Once started trainers will fly over to the given coordinates and begin right away. When finished trainers move on to the next given coordinates to the next gym. All gyms are located at the grand coordinates. Typically there are ten to fifteen gyms to defeat. These gyms will always be located in an area thats popular. That way you'll always get your Pokémon back within 24 hours.