D.C. Mun. Regs. tit. 17, § 9602
9602.1 Subject to § 9601.1, a certification issued pursuant to this chapter shall expire at 11:59 p.m. on October 31 of each odd-numbered year.
9602.2 The Director may modify the renewal system pursuant to § 4006.3 of Chapter 40 of this title and may modify the date on which a certification expires.
SOURCE: Final Rulemaking published at 66 DCR 11404 (August 23, 2019).