D.C. Mun. Regs. tit. 17, § 10601
10601.1 Subject to § 10601.2, a license issued pursuant to this chapter shall expire at 12:00 midnight of December 31st of each even-numbered year.
10601.2 If the Director changes the renewal system pursuant to § 4006.3 of Chapter 40 of this title, a license issued pursuant to this chapter shall expire at 12:00 midnight of the last day of the month of the birthdate of the holder of the license or other date established by the Director.
SOURCE: Final Rulemaking published at 63 DCR 6639 (April 29, 2016).