Forex is unique because it trades 24 hours a day, Sunday evening to Friday evening. This is possible because trading moves across global financial hubs.
Asian Session (Tokyo/Sydney): Starts the trading week, lower liquidity, moves in JPY, AUD, NZD.
European Session (London): Most active — London accounts for ~40% of daily FX volume.
U.S. Session (New York): High volatility, overlaps with London for the biggest price swings.
London–New York overlap (1–4pm GMT): Peak liquidity and sharpest moves. Ideal time for scalping, breakout trading, and news-driven strategies.