Registration for the 2017 International Challenge April is officially scheduled to begin on Wednesday, April 19, 2017, at 00:00 UTC. It will close on April 27 at 23:59 UTC, while the actual competition goes from April 28 at 00:00 UTC until April 30 at 23:59 UTC. Pokémon Sun and Moon players who participate in the upcoming Online Competition will be limited to 15 battles per day. Players may use only Pokémon from the Alola Pokédex. Only the Alola form of Pokémon with regional variants can be used. However, Zygarde, Cosmog, Cosmoem, Solgaleo, Lunala, Necrozma and Magearna cannot be used. For the complete competition information, click here.