Eight fixtures are scheduled for August 16, at Old Trafford, Northampton, Trent Bridge, Taunton, Headingley, Chelmsford, Rose Bowl, and Canterbury.
There will be plenty of changes in both the North and South groups tables on a day filled with T20 action.
August 7 will see four clashes of Vitality Blast 2019
There are eight matches of Vitality Blast 2019 scheduled for August 2.
The second day of Vitality Blast 2019 will see Glamorgan and Worcestershire Rapids playing their second encounters respectively against Gloucestershire and Birmingham Bears. The third fixture of the day will be played between Durham Jets and Northamptonshire.