1720.165—Time computation.
Computation of any period of time prescribed or allowed by the rules and regulations in this part, or by order of the Secretary or of an administrative law judge, shall begin with the first business day following that on which the act, event, development or default initiating such period of time shall have occurred. When the last day of the period so computed is a Saturday, Sunday, or national holiday, or other day on which the Department of Housing and Urban Development is closed, the period shall run until the end of the next following business day. Except when any prescribed or allowed period of time is 7 days or less, each of the Saturdays, Sundays, and national holidays shall be included in the computation of the prescribed or allowed period.