On Thursday, October 29, from 6:00 p.m. to 7:00 p.m. (local time), Gastly will appear much more often in the wild. It can be Shiny. Bonus during the hour: 2× XP for evolving.
Spotlight Hour
Ghost
Poison
Oct 29, 6 PM – 7 PM
Gastly Spotlight Hour on Thursday, October 29
From 6:00 p.m. to 7:00 p.m., Gastly appears in abundance. Bonus: 2× XP for evolving.