D.C. Code § 47-2301
Section 629 of D.C. Law 18-370 provided: "Sec. 629. Applicability. This subtitle shall apply as of October 1, 2011; except, that sections 622 and 623(a)(2) shall apply as of the effective date of this act."
Applicability of D.C. Law 20-61: Section 11001 of D.C. Law 20-61 provided that, except as otherwise provided, the act shall apply as of October 1, 2013.