The legislature shall convene in regular session each year on the fourth Monday in January, but the month and day may be changed by law. The legislature shall adjourn from regular session no later than one hundred twenty consecutive calendar days from the date it convenes except that a regular session may be extended once for up to ten consecutive calendar days. An extension of the regular session requires the affirmative vote of at least two-thirds of the membership of each house of the legislature. The legislature shall adopt as part of the uniform rules of procedure deadlines for scheduling session work not inconsistent with provisions controlling the length of the session. [Amended 1984]