The final event in Niantic‘s Pokémon GO Summer Tour 2018 was the Yokosuka Pokémon GO Safari Zone, which took place from August 29 to September 2 in Yokosuka, Japan. Professor Willow’s Global Challenge took place on September 1 and 2, giving Trainers all over the world another opportunity to unlock bonuses while taking part in this special event. All Stardust-themed global bonuses are now available to everyone until September 10 at 1 p.m. PDT. These include the catch Stardust increase, the 3K Stardust guaranteed per Raid Battle, the 2× hatch Stardust and the 1-hour Star Pieces.
Since the latest Global Challenge was successfully completed, Trainers worldwide can also receive up to five free Raid Passes for Moltres Day, which features the Legendary Pokémon Moltres. On September 8, the Flame Pokémon will be available in Raid Battles around the world for a three-hour period and will know the Flying-type move Sky Attack. You may also be able to encounter a Shiny Moltres for the first time. See below for event hours by region:
The Asia-Pacific region: 12:00 p.m. to 3:00 p.m. JST (GMT +9)
Europe, the Middle East, Africa, and India: 9:00 a.m. to 12:00 p.m. UTC (GMT +0)
The Americas and Greenland: 11:00 a.m. to 2:00 p.m. PDT (GMT −7)
You can receive a Raid Pass up to five times by spinning the Photo Disc at Gyms, starting when the event kicks off in the Asia-Pacific region. Because all went well and all the Global Challenge tasks have been completed, a special Ultra Bonus will be unlocked. This “action-packed” Ultra Bonus will be announced on September 10.
Source: Official Pokémon GO blog