Pokémon Go ‘Festival of Lights’ event, Timed Research guide
From Oct. 14-17, catch candy and XP will be doubled during the “Festival of Lights” event. Our guide lists out the perks and the Timed Research Tasks.
This article references relevant content from the polygon.com website. Original article link: [https://www.polygon.com/pokemon-go-guide/2022/10/14/23402926/festival-lights-timed-research-tasks-rewards-morelull-chinhou]

Pokémon Go’s Halloween event for 2022, “Festival of Lights,” has started and runs from Oct. 14-17. The glowing mushroom Pokémon Morelull has been added to the game as part of the event, and lots of warm light-bringing Pokémon will spawn more frequently.
During the event, XP and candy obtained from catching Pokémon is doubled and Chinchou has an increased Shiny rate.
Below we list out the Timed Research tasks, event Field Research, spawns, and other event perks.
Festival of Lights 2022 Timed Research and rewards
Rewards: 2,500 XP, Galarian Ponyta encounter
Rewards: 2,500 XP, Sparkler trainer pose cosmetic