D.C. Mun. Regs. tit. 17, § 7901
7901.1 Subject to § 7901.2, a license issued pursuant to this chapter shall expire at 12:00 midnight of December 31st of each even-numbered year.
7901.2 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 on the last day of the month of the birth of the holder of the license, or other date established by the Director.
SOURCE: Final Rulemaking published at 56 DCR 7314 (September 4, 2009).