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 13 will witness two matches, between Gloucestershire and Hampshire at Bristol, and between Derbyshire and Worcestershire at Derby.
Six matches will be played on August 11, at Chester-le-Street, Edgbaston, New Road, Cardiff, Radlett, and Headingley.
There will be plenty of changes in both the North and South groups tables on a day filled with T20 action.
There are eight matches of Vitality Blast 2019 scheduled for August 2.
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.
Three Vitality fixtures are scheduled for July 24. Nottinghamshire Outlaws and Birmingham Bears will host Northamptonshire Steelbacks and Derbyshire Falcons respectively. The last clash will see Sussex Sharks and Hampshire contesting in the second match after the first being cancelled due to rain.
West Indies A won the fourth match against India A by a close margin. England Women are struggling to avoid follow on. Zimbabwe will miss the T20 tri-series in Bangladesh.