Trading hours or stock market hours are expressions used to mean the working hours of the world centres of market trading: London, New York, Hong Kong, etc. Stock market trading hours are expressed according to the part of the globe in which the stock market is based and so, depending on the market, they differ from each other. In the context of the Forex currency market, trading hours is implied to mean the time when trades can be executed: round-the-clock on weekdays.