Time to gather that dust!
Pokemon GO is hosting a Mystery Bonus Hour tomorrow, Thursday, February 20th! During this hour you will see a 2x Catch Stardust!
The 2x Catch Stardust Bonus will last from 6pm to 7pm in your local timezone.
The Mystery Bonus Hour is an experimental event that Niantic is trying for Pokemon GO. If it proves popular then we may see more of these events in the future.
Best of luck in your catches!