Pokémon Spotlight Hour featuring witch hat Teddiursa, Shiny witch hat Teddiursa and 2x Evolution XP available in Pokémon GO tomorrow, November 5, from 6 p.m. to 7 p.m. local time

Pokémon GO’s Nov. 5 Spotlight Hour will feature witch hat Teddiursa from 6 to 7 p.m. local time, with an increased chance of encountering its Shiny form. Players will also earn double XP for evolving Pokémon during the event.

Source: Official Pokémon GO blog