Mega Sableye powers up and Shiny Greavard makes its #PokemonGO debut during Halloween 2026 Part II! Keep an eye out for costumed Pokémon in the wild! 🎃👀 November 1 at 10:00 a.m. to November 5 at 8:00 p.m. local time pokemongo.com/news/halloween-part-2-2026