Niantic has anouced that they are introducing Friendship Day, a new event where players can get a lot of experience and bonuses.


Update - April 21st, 2021: Niantic Support announced that there would be some adjustments to the Friendship Day event:
- The Collection Challenge reward will be increased from 100,000 to 175,000 XP.
- There's no longer a Global Challenge for this event.

Catch Pokémon with your friends during Friendship Day!

Trainers, We’re excited to introduce Friendship Day, a new event that’s all about having fun with your friends and enjoying various bonuses while playing Pokémon GO. For this first Friendship Day, Grass-type Pokémon will be appearing more often in the wild. Plus, you’ll be able to complete a Collection Challenge to receive a ton of XP, and you’ll have an increased chance of receiving Lucky Pokémon when you trade with a friend!

Date + Time
Saturday, April 24, 2021, from 11:00 a.m. to 2:00 p.m. local time

Features

• Various Grass-type Pokémon will be appearing more often in the wild.
• Complete the Friendship Day Collection Challenge before the event concludes to earn 100,000 XP!
• Take part in the Friendship Day Global Challenge! For each hourly challenge you complete, you’ll earn 20,000 XP!
• Green confetti will be appearing on the map in celebration of Grass-type Pokémon!

Bonuses

• You’ll have an increased chance of receiving a Lucky Pokémon when you complete a trade with a friend. Please note that this bonus will be active until 5:00 p.m. local time on the day of the event.
• Trade distance will be increased to 40 km.
• A 3× Catch XP bonus will be active.
• Incense activated during the event will last for three hours.
• Lures activated during the event will last for three hours.

Be sure to share your adventures with us on social media using #PokemonGOfriend! We can’t wait to see what Pokémon you and your friends catch and trade together during Friendship Day. 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/friendshipday-grass-2021/?hl=en