Niantic has announced that Snivy will be the April 2021 Community Day Pokémon. The Community Day takes place on Sunday, April 11th, 2021, from 11:00 a.m. to 5:00 p.m. local time.

Snivy stars during April Community Day!

Trainers, The featured Pokémon for this April’s Community Day will be Snivy, the Grass Snake Pokémon!

Date + Time
Sunday, April 11, 2021, from 11:00 a.m. to 5:00 p.m. local time

Features

• Snivy will be appearing more frequently in the wild. If you’re lucky, you may encounter a Shiny one!
• Evolve Servine (the Evolution of Snivy) during the event or up to two hours afterward to get a Serperior that knows the attack Frenzy Plant.
• Take a few snapshots during Community Day for a surprise!
• There’ll be a special one-time-purchase Community Day Box available for 1,280 PokéCoins, featuring 50 Ultra Balls, four Star Pieces, four Mossy Lure Modules, and an Elite Charged TM.
• For US $1 (or the equivalent pricing tier in your local currency), you’ll be able to access the Snivy Community Day–exclusive Special Research story, Snivy in the Sunshine.
• Stay tuned for when tickets for the Snivy in the Sunshine Special Research story go live! Tickets are nonrefundable (subject to applicable law and the exceptions set forth in the Terms of Service). Please note that this Special Research will not include an in-game medal.

Bonuses

• 3× Catch Stardust
• Incense activated during the event will last for three hours

Please be aware of your surroundings and follow guidelines from local health authorities when playing Pokémon GO. Upcoming events are subject to change.

Source: https://pokemongolive.com/post/communityday-apr21/?hl=en