D.C. Mun. Regs. tit. 22-C, § 5001
5001.1 In computing any period of time specified in this title, the day of the act, event, or default shall not be counted, and the last day of the period shall be counted unless it is a Saturday, Sunday, legal holiday, or day on which ABCA is officially closed, in which event the time period shall continue until the next day that is not a Saturday, Sunday, legal holiday, or day on which ABCA is not closed.
SOURCE: Notice of Emergency and Third Proposed Rulemaking published at 58 DCR 3299 (April 15, 2011)[EXPIRED]; as amended by Notice of Emergency and Fourth Proposed Rulemaking published at 58 DCR 7207 (August 12, 2011)[EXPIRED]; as amended by Notice of Final Rulemaking published at 58 DCR 10128, 10164 (December 2, 2011); as amended by Final Rulemaking published at 71 DCR 002388 (March 8, 2024).