In terms of section 67 of the Prevention of and Treatment for Substance Abuse Act, 2008 (Act No. 70 of 2008), I hereby determine 31 March 2013 as the date on which the said Act shall come into operation. 
https://newsletter.po.creamermedia.com/article/prevention-of-and-treatment-of-substance-abuse-act-702008-commencement-gazette-36304-proc-8-2013-03-28
28th March 2013 By: Asha Ramsaran
In terms of section 67 of the Prevention of and Treatment for Substance Abuse Act, 2008 (Act No. 70 of 2008), I hereby determine 31 March 2013 as the date on which the said Act shall come into operation.