39 C.F.R. § 3003.2 Definitions.
Title 39 - Postal Service
For purposes of this part: (a) Commission means the Postal Rate Commission. (b) Individual, record, and system of records have the meanings specified in 5 U.S.C. 552a(a). (c) Day means a calendar day and does not include Saturdays, Sundays, and legal holidays.
Title 39: Postal Service
PART 3003—PRIVACY ACT RULES
§ 3003.2 Definitions.

