Pokémon Go ‘Solstice Horizons’ event, ‘Starry Skies’ Special Research guide
Pokémon Go’s Solstice Horizons event comes with a Starry Skies Special Research, Collection Challenge, and shiny Fomantis. See the bonuses and research tasks.
This article references relevant content from the polygon.com website. Original article link: [https://www.polygon.com/pokemon-go-guide/2023/6/16/23760923/solstice-horizons-event-starry-skies-special-research-collection-challenge-shiny-fomantis]

The Pokémon Go “Solstice Horizons” event is a limited-time celebration of Pokémon that specifically love the day and night. It runs from June 16-25.
The event features special Pokémon spawning at differing times of day, 2X Stardust for catching Pokémon, and Lunatone and Solrock spawning regardless of your location. (Both of these Pokémon are usually migratory and regional Pokémon.)
Notably, Fomantis is making its shiny debut, so lucky players will be able to find one of these critters.

There will also be a Team Go Rocket portion of this event, but it doesn’t start until June 21.
Below, we list out all the event perks and bonuses, including the Special Research and Collection Challenge.
Pokémon Go ‘Starry Skies’ Special Research and rewards
This set of Special Research can be repeated if you pay $4.99 to get more Cosmog, if you want. It will initially be available free to any player who logs in and starts it by June 25.
Rewards: 5 Razz Berries, 7 Stardust, Wobbuffet encounter
After completing step 1 of the Starry Skies Special Research, you’ll have the option to choose between researching Daytime Pokémon or Nighttime Pokémon. Depending on which path you choose, you’ll have different research tasks but (mostly) the same rewards.
☼ Help Research Daytime Pokémon tasks
Rewards: 15 Poké Balls, 78 Stardust, Galarian Slowpoke encounter
Rewards: 1 Mossy Lure Module, 789 Stardust, Starmie encounter
Rewards: 20 Ultra Balls, 7,890 Stardust, Cosmog encounter
☾ Help Research Nighttime Pokémon tasks
Rewards: 15 Poké Balls, 78 Stardust, Galarian Slowpoke encounter
Rewards: 1 Glacial Lure Module, 789 Stardust, Starmie encounter
Rewards: 20 Ultra Balls, 7,890 Stardust, Cosmog encounter
Pokémon Go ‘Solstice Horizons’ Collection Challenge: Daytime
Catch the following to get rewards:
Rewards: 2,000 Stardust, Fomantis encounter
Pokémon Go ‘Solstice Horizons’ Collection Challenge: Nighttime
Catch the following to get rewards:
Rewards: 2,000 Stardust, Fomantis encounter