Solstice Week

Solstice Week is a unique event in Pokémon GO that began on June 13, 2017. This event celebrates the upcoming in the Northern Hemisphere and  in the Southern Hemisphere.

Background
This event takes place between June, 2017 and June , 2017.

To celebrate summer in the Northern Hemisphere and winter in the Southern Hemisphere, Fire-type and Ice-type Pokémon will have increased spawns. Pokémon like Charmander, Cyndaquil, Growlithe, Houndour, Ponyta, Swinub, Vulpix, and their evolutions will appear more frequently. Rare Pokémon like Sneasel, Magmar, Cloyster, and other Fire and Ice types may appear as well.

Trainers will receive huge XP bonuses for successfully catching Pokémon with Nice, Great, and Excellent Throws, as well as Curveballs and First Throws. Hatching Eggs will also reward trainers with even more XP.

Lucky Eggs will be 50% off in the in-game shop.

Trivia

 * This event was leaked ten days early through Team Eeveelution, the same ones who confirmed the Water Festival.
 * An Italian and Chinese translation of the event's announcement stated that Gyms will be disabled starting on the of June.
 * Curveballs will reward triple XP.