N.M. Stat. § 58-5-6
Banking days; notice; closing.
A. A bank is authorized to fix from time to time the days and hours when each of its
banking offices will be open to the public for its banking business. The days and hours
need not be the same for each office. The bank shall notify the director of the financial
institutions division of the days and hours of each banking office and of any change in
the scheduled days and hours of each office. The bank shall give further notice by
whatever means it selects as best calculated to advise the public of any change.
B. In an emergency or threat of an emergency or other circumstances beyond the
control of the bank which would imperil persons or property or impede normal
operations, all or any of its banking offices may be or remain closed. Notice of the
closing shall be given to the director of the financial institutions division as promptly as
conditions will permit. The director of the financial institutions division may order the
reopening of any office on his finding that conditions justifying the closing under this
section do not then exist.
C. Any day on which a bank shall pursuant to this section be or remain closed shall
with respect to the bank be deemed a legal holiday.
D. Any office of a bank may be closed under Subsection A or B of this section, even
though other offices of the bank are open, but any day of such closing shall not be a
legal holiday in respect to any acts to be performed by or at the bank on such day
unless the act is to be performed only by or at the office which is closed.
E. Where pursuant to agreement or law any act is to be performed by or at a bank
on any day when such bank shall pursuant to this section be or remain closed, the act
may be performed on the next succeeding banking day with the effect as though
performed on the appointed day.
F. Nothing in any law of this state shall in any manner whatsoever affect the validity
of or render void or voidable the payment, satisfaction or acceptance of a check or other
negotiable instrument or any other transaction by a bank because done or performed on
any holiday or partial holiday.