How to evolve Cosmog into Solgaleo and Lunala in Pokemon GO?

Cosmog is again available in Pokemon GO as part of the Solstice Horizons event during the Season of Hidden Gems.

Thanks Niantic for forcing me to evolve this gem : r/pokemongo

Cosmoem evolution trick into Solgaleo in pokemon go.

NEW LEGENDARIES* coming to Pokemon GO // Solgaleo, Lunala, Mimikyu

Solgaleo - Evolutions, Location, and Learnset

Which One Should YOU Choose? Solgaleo vs. Lunala in Pokémon GO

Pokémon GO: How To Evolve Cosmoem Into Solgaleo And Lunala

How to evolve Cosmog into Solgaleo and Lunala in Pokemon GO?

Season of Light: Everything we know about the next Pokémon GO

Solgaleo vs. Lunala: Which Legend to Choose

Pokémon GO: How To Evolve Cosmoem Into Solgaleo And Lunala