Actually, 30 days notice is required.
(b) Notice before maturity for time accounts longer than one month that renew automatically. For time accounts with a maturity longer than one month that renew automatically at maturity, institutions shall provide the disclosures described below before maturity. The disclosures shall be mailed or delivered at least 30 calendar days before maturity of the existing account. Alternatively, the disclosures may be mailed or delivered at least 20 calendar days before the end of the grace period on the existing account, provided a grace period of at least five calendar days is allowed.