Halloween Event
From Pokemon Go Wiki
Halloween Event took place between October 26, 2016 to November 1, 2016. During this event, Gastly, Haunter, Gengar, Zubat, Golbat, Drowzee and Hypno have increased Spawn rate. Additionally, players will earn candy from Buddy Pokemon 4 times faster. Players will earn double candies from hatching eggs. They will earn more candies from transfering Pokemon.
