The Forex market operates 24 hours a day, five days a week, allowing traders to buy and sell currencies at any time. The market is divided into four main trading sessions, each corresponding to major financial centers around the world: 1. **Sydney Session**: Opens at 10 PM GMT and closes at 7 AM GMT. It is the first major session, often characterized by lower volatility. 2. **Tokyo Session**: Runs from 12 AM to 9 AM GMT. This session sees increased activity as Asian markets open, particularly with Japanese yen and other Asian currencies. 3. **London Session**: Opens at 8 AM and closes at 5 PM GMT. Known for high volatility, it is the largest and most significant session due to the concentration of trading volume. 4. **New York Session**: Starts at 1 PM and ends at 10 PM GMT. It overlaps with the London session for a few hours, resulting in increased market activity and volatility. Understanding these sessions helps traders identify the best times to trade, as different sessions may experience varying levels of liquidity and price movements.