The Forex market is open five days a week, 24 hours a day. In other words, the FX world runs when the major banks are open. Furthermore, Forex is a decentralized market, with trading sessions divided into 4 regions: Sydney, Tokyo, London, and New York.
The trading week always starts at 5:00 PM EST on Sunday in Sydney and ends at 5:00 PM EST in New York. Interestingly, these regions overlap when approximately 2 hours are left from the session shift, overwhelming that period with a higher liquidity and trading volume. This is due to more traders participating in trading.
These trading sessions (Sydney, Tokyo, London, and New York) uniquely influence the dominant currencies relevant to that region.
For instance, the Asian session focused on USD/JPY because the Japanese banks and traders were active during that period. On the other hand, currency pairs relevant to the Euro, British Pound, and Swiss Franc are more volatile during London’s trading hours.
Additionally, markets such as gold, commodities, stocks, indices, and pairs with USD like EUR/USD usually make big moves during the United States session, specifically in North America and New York City.