N.J. Const. art. IV, § 1, ¶ 3

Each Legislature shall be constituted for a term of 2 years beginning at noon on the second Tuesday in January in each even numbered year, at which time the Senate and General Assembly shall meet and organize separately and the first annual session of the Legislature shall commence. Said first annual session shall terminate at noon on the second Tuesday in January next following, at which time the second annual session shall commence and it shall terminate at noon on the second Tuesday in January then next following but either session may be sooner terminated by adjournment sine die. All business before either House or any of the committees thereof at the end of the first annual session may be resumed in the second annual session. The legislative year shall commence at noon on the second Tuesday in January of each year. Article IV, Section I, paragraph 3 amended effective December 3, 1968. (Applicable to the 1970 Legislature and thereafter.)