The forex market is open 24 hours a day, five days a week. Trading hours for the major currency pairs, such as the EUR/USD, GBP/USD, USD/JPY, and USD/CHF are all continuous from Sunday 5pm EST to Friday 4pm EST. However, the stock market is only open during trading hours from Monday to Friday, from 9:30am ET to 4:00pm ET. During these hours, stock market participants trade securities on major U.S. exchanges, such as the NYSE and NASDAQ. During non-trading hours, stock market prices are based on operations conducted through electronic communication networks (ECN).