Astral Eclipse

Astral Eclipse was an event in Pokémon GO. There was also an additional part of the event named Ultra Beast Arrival: Global.

Featured Pokémon
These Pokémon were released at the start of the event:

These Pokémon had increased spawn rates in the wild and from Incense or Lure Modules. Lunatone and Solrock appeared worldwide.

These Raid Bosses were available during the event:

Field Research event tasks
These Field Research tasks were available during the event:

Special Research
The ninth part of the A Cosmic Companion Special Research was released in this event.

Collection Challenge
To complete the Collection Challenge, Trainer must obtain these Pokémon during the event:

Avatar items
These avatar items were released at the start of the event:

Ultra Beast Arrival
Available by redeeming codes throughout the day:

Featured Pokémon
These Raid Bosses were available during the event:

Global:

The Americas:

Europe:

Asia-Pacific:

Northern Hemisphere:

Southern Hemisphere:

These Pokémon had increased spawn rates around the Gym that hosted the Ultra Beast raid for a short duration:

Special Research
Ultra Beast Arrival Special Research was available during the event on London, UK:

Timed Research
Ultra Beast Arrival Timed Research was available during the event until 6 p.m. local time:

Collection Challenge
An extra Collection Challenge was available by redeeming special codes throughout the day. These codes also awarded the exclusive medal. To complete the Collection Challenge, Trainer must obtain these Pokémon during the event:

Global Challenge
From November  to  Trainers around the world could combine efforts to reap additional rewards for the event.

Shop special offer
These offers were available from the shop since November.

Trivia

 * The Ultra Beast Arrival medal is stated to be November 26, 2022, but the event is actually on a day later.