1.In respect of contracts pertaining to a class of OTC derivatives set out in the Annex, the clearing obligation shall take effect on:
(a)9 February 2017 for counterparties in Category 1;
(b)9 August 2017 for counterparties in Category 2;
(c)21 June 2019 for counterparties in Category 3;
(d)9 May 2019 for counterparties in Category 4.
Where a contract is concluded between two counterparties included in different categories of counterparties, the date from which the clearing obligation takes effect for that contract shall be the later date.