Any bank, including national banking associations and federal reserve banks, may permit any one or more or all of its offices to remain closed on any one or more or all Saturdays, as the bank, by resolution of its board of directors, may from time to time determine. Any Saturday on which an office of a bank remains closed, as herein permitted, shall constitute a legal holiday as to such office. Any act authorized, required or permitted to be performed at, by or with respect to any such office on a Saturday on which the office is so closed may be performed on the next succeeding business day. No liability or loss of rights of any kind shall result from such delay.