August 30 will feature eight matches, at Old Trafford, Northampton, Trent Bridge, Birmingham, Chelmsford, Cardiff, Taunton, and Hove.
Two matches of the 2019 Vitality Blast will be played on the 27th. Durham will host Birmingham Bears at Chester-le-Street, while Surrey will host Somerset at The Oval.
August 23 will feature six Vitality Blast 2019 matches
August 15 will feature three matches at the 2019 Vitality Blast – at Riverside Ground, The Oval, and Derby.
Six matches will be played on August 11, at Chester-le-Street, Edgbaston, New Road, Cardiff, Radlett, and Headingley.
Worcestershire will hope to keep pressure in pursuit of the top spot while Leicestershire looks to move out of the bottom.
Sunday will feature three Vitality matches: Derbyshire Falcons vs Lancashire Lightning, Northamptonshire Steelbacks vs Yorkshire Vikings, and Worcestershire Rapids vs Durham Jets.
Lancashire, Warwickshire, and Hampshire will host Durham, Leicestershire, and Kent respectively.