N.Y. Senate Rules Rule 6, § 2: Hours in session

§ 2. Hours in session. No session shall be held between 12:00 A.M. and

8:00 A.M.; provided, however, that the Senate may remain in session to

complete action on a measure or measures upon which debate was begun

prior to 12:00 A.M. or to act on a measure or measures for which a

message of necessity has been received from the Governor or upon a

majority vote of all of the members elected to the Senate.