Question 1

What date is 9 months after May 30?

Accepted Answer

9 months after May 30 is February 28.

Question 2

Is 9 months after May 30 always the same?

Accepted Answer

Yes — for a given month and day, 9 months forward consistently lands on February 28. Edge cases (like adding 9 months to January 31) clamp to the last valid day of the result month.

Question 3

What is 9 months before February 28?

Accepted Answer

9 months before February 28 brings you back to May 30.

9 Months After May 30

February 28