In some cases, 24-hour laundromats may periodically close. The owners of the laundromat may close it for cleaning, holidays, religious observances, renovation, or for any number of other reasons. Laudromats may also close at times when the machines are no longer functional and need repair.
Other factors that may affect the opening and closing of businesses include your state or local government's "Blue Laws," which are put in place to restrict or ban activities for religious reasons. These laws can determine the operating hours for businesses as well as the dates at which they can remain open. Generally, these laws are put in place in areas where populations are highly mono-religious.