Niantic has announced that Uxie, Mesprit, and Azelf will return to raids for a limited time from Tuesday, November 24th, 2020, at 1:00 p.m. to Monday, November 30th, 2020, at 1:00 p.m. PST (GMT −8).

Uxie, Mesprit, and Azelf return to raids for a limited time!

Trainers, In the upcoming Lake Legends event, the Legendary Pokémon Uxie, Mesprit, or Azelf will be appearing in five-star raids depending on where you are! During this time , Goldeen will also be appearing more often in the wild and hatching from 5 km Eggs. If you’re lucky, you might even find a Shiny Goldeen!

Date + Time
Tuesday, November 24, 2020, at 1:00 p.m. to Monday, November 30, 2020, at 1:00 p.m. PST (GMT −8)

Features

• Uxie, Mesprit, or Azelf will be appearing in five-star raids depending on where you are. Some other Pokémon related to lakes, knowledge, emotion, and willpower will be appearing in raids as well!
• Pokémon commonly found near lakes—including Psyduck, Goldeen, Magikarp, Surskit, Starly, Bidoof, and Shellos—will be attracted to Incense, hatching from Eggs, and appearing more often in the wild.
• Pokémon related to knowledge, emotion, and willpower—like Abra, Machop, and Ralts—will be attracted to Incense, hatching from Eggs, and appearing more often in the wild..
• Goldeen will be hatching from 5 km Eggs. If you’re lucky, you might even find a Shiny Goldeen!
• AR Mapping tasks will offer new rewards.
• Themed Field Research will be available for the duration of the event.

Best of luck, Trainers! 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/lakelegends2020/?hl=en