From August 2–19, you will earn three more Candies than normal whenever you trade Pokémon.
☆ NintendObs Weekly – Monday, July 30, 2018 – Sunday, August 5, 2018.
Earn Perks for Trading in Pokémon GO
For two weeks, take advantage of a special event in Pokémon GO to get a variety of bonuses for trading with friends.
August 02, 2018
Celebrate the newfound ability to trade your Pokémon with friends in Pokémon GO with a special two-week event that will award all sorts of excellent bonuses. From August 2–19, you will earn three more Candies than normal whenever you trade Pokémon. The amount of Stardust required to make a trade will be reduced as well.
— Pokémon News
Source: Pokémon.
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