How long does a birth parent have to change their mind after relinquishing parental rights?

Florida has no revocation period for infants under 6 months of age.  For children 6 months of age of older there is a 3 business day revocation period.  Saturday is considered a business day in Florida.  In Georgia, parents have a 4 day revocation period for any reason.  Day 1 starts the day after the signing and day 4 cannot fall on a weekend or legal holiday.