20 C.F.R. § 404.145 When you acquire a quarter of coverage.
Title 20 - Employees' Benefits
If we credit you with a quarter of coverage (QC) for a calendar quarter under paragraph (b), (c), or (d) of §404.141 for calendar years before 1978 or assign it to a specific calendar quarter under paragraph (b) of §404.143 for calendar years after 1977, you acquire the QC as of the first day of the calendar quarter.
Title 20: Employees' Benefits
PART 404—FEDERAL OLD-AGE, SURVIVORS AND DISABILITY INSURANCE (1950– )
Subpart B—Insured Status and Quarters of Coverage
Quarters of Coverage
§ 404.145 When you acquire a quarter of coverage.
