20 CFR §404.311

1. (a)We will find you entitled to old-age benefits beginning with:
   1. (1)If you have attained full retirement age (as defined in § 404.409), the first month covered by your application in which you meet all requirements for entitlement; or
   2. (2)If you have attained age 62, but have not attained full retirement age (as defined in § 404.409), the first month covered by your application throughout which you meet all requirements for entitlement.
2. (b)We will find your entitlement to old-age benefits ends with the month before the month you die.