December 2019 Community Day

The December 2019 Community Day was the twenty-forth Community Day in Pokémon GO and the last one scheduled in 2019. It was a two-day event featuring all Pokémon from 2018 and 2019 Community Days.

Features
From 9 a.m. to 9 p.m. on each day

From 11 a.m. to 2 p.m. on each day

Featured Pokémon
The two day event occurred from 9 a.m. on December to 9 p.m. on December  local time. Exclusive moves for the Pokémon were obtainable in the whole time slot.

However, the Pokémon appearances were only featured from 9 a.m. to 9 p.m. on each day and some minor differences between two days. In simple words:
 * The 2019 Community Day Pokémon appeared in the wild on both days.
 * The 2018 Community Day Pokémon appeared in Tier 1 Raid Battles on both days.
 * The first half of both years and the second half of both years Community Day Pokémon appeared in the Eggs on Saturday and Sunday respectively. (Pichu in Pikachu case)
 * Extra bonuses occurred from 11 a.m. to 2 p.m. on each day, including double catch Stardust and XP, half Egg distance and 3-hour lures.
 * The first half of 2019 and the second half of 2019 Community Day Pokémon appeared in wild more frequently on Saturday and Sunday respectively.

Special Research
During this event there was a one-part Special Research series that was titled Celebrate 2019 in game.

Shop special offer
The following offers were available from the shop from the start of the event.

Trivia

 * Shadow Pokémon remained Frustration when evolved while Purified Pokémon could learn the exclusive moves, replacing Return.
 * Only Shadow Tyranitar could learn exclusive move because Smack Down is a Fast Attack.
 * All Eevee caught or hatched from Eggs obtained in the Community Day could learn Last Resort.
 * Evolution of Eevee, including Leafeon and Glaceon, could learn Last Resort whatever the Eevee had Last Resort.
 * Pikachu evolved from Pichu could learn Surf, including the costume versions.