New York Consolidated Laws, Estates, Powers and Trusts Law - EPT § 10-8.3 Rule against perpetuities;  facts to be considered

When the permissible period of the rule against perpetuities must be computed from the time of the creation of the power of appointment, facts and circumstances existing on the effective date of the instrument exercising the power shall be taken into account in determining the validity of interests created by the instrument exercising the power.