1.A reference to a trading day in relation to a trading venue shall be a reference to any day during which that trading venue is open for trading.
2.A reference to daily trading hours of a trading venue or an investment firm shall be a reference to the hours which the trading venue or investment firm establishes in advance and makes public as its trading hours.
3.A reference to the opening of the trading day at a given trading venue shall be a reference to the commencement of the daily trading hours of that trading venue.
4.A reference to the end of the trading day at a given trading venue shall be a reference to the end of the daily trading hours of that trading venue.