Sec. 4. As used in this chapter, "final day of session" means:
(1) April 29 in odd-numbered years and March 14 in even-numbered years; or
(2) a date earlier than April 29 in odd-numbered years and March 14 in even-numbered years, if the presiding officers of each body have:
(A) jointly agreed; and
(B) publicly announced;
that the earlier date will be the final day of session.