Spark-tacular news, Trainers! ⚡ Mega Raichu X and Mega Raichu Y debut during Raichu Super Mega Raid Day in #PokemonGO! July 18 from 2:00 p.m. to 5:00 p.m. local time pokemongo.com/news/raichu-super-mega-raid-day-2026