Template:Nutshell Equity Derivatives 6.4
6.4. “Disrupted Day” means any Scheduled Trading Day on which an Exchange or Related Exchange does not open for trading during its regular trading session or suffers a Market Disruption Event. The Calculation Agent must notify the parties as soon as practicable if any Averaging Date, a Valuation Date, Potential Exercise Date, Knock-in Determination Day, Knock-out Determination Day or Expiration Date is a Disrupted Day.