Question

Congress is divided into how many sessions

Answer 1

two
Sessions. A term of Congress is divided into two "sessions", one for each year; Congress has occasionally also been called into an extra, (or special) session (the Constitution requires Congress to meet at least once each year).

Answer 2

Congress divided into two "sessions" that includes the one for each year and occasionally also been called into an extra as special session. It mainly includes the constitution as Congress that meets least once each year.

New session commences on the January 3 each year. Congress met from the first Monday in December to April or May as first session of their term.