I need to check that difference between 2 date is 1 year. For example (for user)

01/01/1991 12/31/1991 is good
01/01/1992 01/01/1991 is good
12/31/1991 12/31/1992 is good
02/01/1991 02/01/1991 is good

other dates which are greater than year ( or 1 year plus 1 day) are bad.

Is there a way of doing this?

TIA