This section applies to all time periods established by these Rules, by an order, or by any applicable law.
In computing any time period measured in days, the day of the act, event, or default from which the period begins to run shall not be included.
For any time period measured in days, the last day of the period shall be included unless OAH is closed on that day. In that case, the period runs until the end of the next day on which OAH is open.
In computing any time period measured in hours, no hours shall be excluded from the computation, except as provided in this subsection:
When a party may or must act within a specified time period after service, and service is made by United States mail, commercial carrier, or District of Columbia Government inter-agency mail, five (5) calendar days are added after the period would otherwise expire, unless a statute or regulation provides otherwise.
When a party may or must act within a specified time period, an Administrative Law Judge for good cause shown may reduce the time or extend it, even after the period has expired, except for any period prescribed by law, or any period provided under Sections 2806 and 2828.
Any reference to "days" in an OAH order means calendar days unless specifically designated as business days in the order.
D.C. Mun. Regs. tit. 1, r. 1-2812