Whenever any act of a secular nature other than a work of necessity or mercy is appointed by contract to be performed upon a particular day which day falls upon a holiday, such act may be performed upon the next business day with the same effect as if it had been performed upon the day appointed.
Mont. Code Ann. § 28-3-603
Postponement of performance date which falls on holiday
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.