Ind. Code § 9-18.1-14.5-9
(a) If the date on which the registration of a watercraft expires is a day on which all license branches located in the county in which the watercraft is registered are closed, including:
(2) a legal holiday listed in IC 1-1-9-1 ;
the registration expires at midnight on the date following the next day on which a license branch located in the county in which the watercraft is registered is open for business.
(b) Except as provided in subsection (a), a person that owns or operates a watercraft may not operate or permit the operation of a watercraft that:
As added by P.L.164-2020, SEC.38.