Pokémon Go' Holiday Event: Start Time, Field Research, Vanillite and More

Regice will return in Raids during a special weekend event at the end of the year.

Pokémon Go holiday challenge guide - Polygon

All Pokemon GO Winter Holiday research tasks and Winter Wishes path

Pokémon GO Holidays 2020: Tuesday, Dec 22 at 8:00 AM to Thursday, Dec 31, at 10 PM local time [GPX ROUTE / DISCORD] : r/PoGoAndroidSpoofing

Pokémon GO Holidays 2021: Bergmite's Pokémon GO debut, new costumes and avatar items, and more! - Pokémon GO : r/TheSilphRoad

Pokémon GO Winter Holiday 2023 Part One: Complete Event Guide

December 2022 Field Research Tasks & Rewards

Pokémon GO Holiday - Part 2 - Event Overview & Field Research (LeekDuck) : r/TheSilphRoad

Pokémon GO Winter Holiday 2022 (Part 1)

Winter Holiday Part 2 Gets Even Better?!

Pokemon Go Holidays 2020 event: Costumed Pikachu, Vanillite debut, more - Dexerto