C. Numbered Congresses, Timekeeping, Oaths, Chamber Leadership, and the Legislative Day

This subsection defines the duration of each numbered Congress. It also sets constitutional rules on what defines a legislative year and a legislative day. Finally, it outlines a few specific procedures that must be followed on the first day of a new Congress.

C.1. Numbered Congresses

C.2. Congressional Timekeeping and the Opening of a Congress