# 404.102 Definitions.
For the purpose of this subpart—
*Act* means the Social Security Act, as amended.
*Age* means how many years old you are. You reach a particular age on the day before your birthday. For example, if your sixty-second birthday is on July 1, 1979, you became age 62 on June 30, 1979.
*Quarter* or *calendar quarter* means a period of three calendar months ending March 31, June 30, September 30, or December 31 of any year.
*We, our,* or *us* means the Social Security Administration.
*You* or *your* means the worker whose insured status is being considered.