Hi @Treb Bert ,
According to your description, if the date to be excluded is certain, you can directly add a judgment based on the original formula to exclude the situation:
This is the formula I tested:
=IF(AND(MONTH([Review Date])=6,OR(DAY([Review Date])=12,DAY([Review Date])=17)),[Review Date]+1,IF(WEEKDAY([Review Date])=2,[Review Date]+3,IF(WEEKDAY([Review Date])=3,[Review Date]+3,IF(WEEKDAY([Review Date])=1,[Review Date]+3+1,[Review Date]+3+2))))
When the condition is met, I perform Review date+1, you can modify it according to your own needs.
The result:
Have a nice day!
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