New York Consolidated Laws, Estates, Powers and Trusts Law - EPT § 10-8.1 Rule against perpetuities;  time at which permissible period begins

(a) Where an estate is created by an instrument exercising a power of appointment, the permissible period of the rule against perpetuities begins:

(b) Where the creator of a trust reserves to himself an unqualified power to revoke, the permissible period of the rule against perpetuities begins when the power to revoke terminates by reason of the death of the creator, by a release of such power or otherwise.