US Code
CHAPTER 857— RETIREMENT OF CIVILIAN MEMBERS OF THE TEACHING STAFFS OF THE UNITED STATES NAVAL ACADEMY AND UNITED STATES NAVAL POSTGRADUATE SCHOOL
§ 8584. Age of retirement

A civilian member may be retired at any time after his sixty-fifth birthday, and shall be retired by June 30 following that birthday. However, in any special case the Secretary of the Navy may defer the retirement of a member until a date not later than the member’s seventieth birthday.