December 2019

The twenty-fourth Pokémon GO Community Day is a repeat of all 2019 Pokémon GO Community Day Pokémon with special situations.
These will spawn all weekend but for 3 hours each day a selection will have increased spawns. On Saturday: Totodile, Swinub, Treecko, Torchic, Slakoth, and Bagon and on Sunday Mudkip, Ralts, Trapinch, Turtwig, and Chimchar. It'll also bring raids for all the 2018 Raid Pokémon from 9am to 9pm local time each day:

Saturday:
Pokémon appearing in raids: Bulbasaur, Charmander, Squirtle, Pikachu, Eevee, Dratini, Chikorita, Cyndaquil, Mareep, Larvitar, and Beldum
Pokémon available to hatch from Eggs: Bulbasaur, Charmander, Pikachu, Dratini, Totodile, Mareep, Swinub, Larvitar, Treecko, Torchic, Slakoth, and Bagon
Increased spawns from 11am to 2pm: Totodile, Swinub, Treecko, Torchic, Slakoth, and Bagon

Sunday:
Pokémon appearing in raids: Bulbasaur, Charmander, Squirtle, Pikachu, Eevee, Dratini, Chikorita, Cyndaquil, Mareep, Larvitar, and Beldum
Pokémon available to hatch from Eggs: Squirtle, Eevee, Chikorita, Cyndaquil, Mudkip, Ralts, Trapinch, Beldum, Turtwig, and Chimchar
Increased spawns from 11am to 2pm: Mudkip, Ralts, Trapinch, Turtwig, and Chimchar