Niantic have announced the details for the 12th Pokémon GO Community Day which takes place on January 12th, 2019 at 2:00 PM until 5:00 PM EST. The featured Pokémon for this day is Totodile. Totodile will appear in the wild more frequently for three hours that day. Feraligatr evolved during January Community Day will know the powerful Water-type attack Hydro Cannon. The 1/4 Egg Hatch Distance and 3-hour Lures bonuses will also be available that day.

Source: https://pokemongolive.com/events/community-day/