August 30 will feature eight matches, at Old Trafford, Northampton, Trent Bridge, Birmingham, Chelmsford, Cardiff, Taunton, and Hove.
There will be plenty of changes in both the North and South groups tables on a day filled with T20 action.
August 23 will feature six Vitality Blast 2019 matches
Eight fixtures are scheduled for August 16, at Old Trafford, Northampton, Trent Bridge, Taunton, Headingley, Chelmsford, Rose Bowl, and Canterbury.
August 15 will feature three matches at the 2019 Vitality Blast – at Riverside Ground, The Oval, and Derby.
August 7 will see four clashes of Vitality Blast 2019
August 4 will feature four Vitality Blast matches, at New Road, Headingley, Bristol, and Richmond.
Worcestershire will hope to keep pressure in pursuit of the top spot while Leicestershire looks to move out of the bottom.
Saturday will feature two Vitality Blast 2019 matches, at Trent Bridge and Chelmsford.
Two fixtures of Vitality Blast 2019 on July 23 will see Leicestershire hosting Yorkshire and a clash between Middlesex and Surrey at The Oval, London.