Mercury Retrograde in Virgo August 2016. The 3rd Mercury Retrograde of 2016 begins August 30 at 9:04 am and ends September 22 at 1:30 am (EDT). Mercury Retrograde is a great opportunity to look backwards to fix what might be broken, before moving forward again. This retrograde begins and ends in the earthy sign of Virgo, making this an especially good time to review old projects and routines. Look for ways to change things up, and don't be surprised if an amazing new idea is the result!