One Market, Four Sessions
Foreign exchange runs continuously from the Sydney Monday morning open to the New York Friday close, with no central exchange. Liquidity rotates westward through banking centers: Sydney, Tokyo, London, and New York. In Eastern Time the rough windows are Sydney 5:00 pm to 2:00 am, Tokyo 7:00 pm to 4:00 am, London 3:00 am to 12:00 pm, and New York 8:00 am to 5:00 pm.
Daylight saving shifts these windows twice a year and briefly desynchronizes London and New York, since Europe and America change clocks on different weekends. Tools that display your local time beside GMT remove most of the confusion.
Where the Volume Lives
The BIS 2022 survey credited the UK with about 38 percent of global turnover and the United States with 19 percent, meaning London and New York together clear more than half of world flow. Tokyo holds near 4 to 5 percent, and Sydney is a rounding error by comparison despite opening the week.
Depth follows those shares. Spreads on EUR/USD sit near half a pip to one pip during the London-New York overlap from roughly 8 to 11 am ET, and widen toward two or three pips in the Sydney morning when Asia has gone home and Europe has not yet arrived.
The Overlap Window
Between 8 and 11 am ET both London and New York desks are staffed, US data has just landed at 8:30, and the European lunch break has not begun. This stretch produces the tightest spreads, the largest candles, and the most reliable breakout follow-through of the day.
Contrast that with the 5:00 pm ET rollover, when liquidity bottoms and brokers charge or credit swap. Stops executed near rollover catch worse fills, and many systematic traders simply flatten beforehand.
Asian Range Behavior
Asian hours, roughly 7:00 pm to 4:00 am ET, compress the majors into 20 to 40 pip boxes since Tokyo liquidity is a fraction of London volume. The high and low of that Asian session then act as reference levels: the London open frequently probes one side, and a genuine breakout of the Asian range during the European morning tends to extend into New York.
JPY crosses behave differently during Asia because Tokyo accounts dominate yen flow, so AUD/JPY and EUR/JPY can trend overnight while EUR/USD coils. ChokTrade session heatmaps show this split clearly, with yen pairs glowing through the Tokyo morning while the majors sit dormant.
Picking Your Hours
Match strategy to clock. Range traders should work the Asian session on majors, fading the established box with tight targets. Breakout traders want the London open at 3:00 am ET or the New York overlap, where failed-break reversals also resolve fastest. Swing traders holding for days can execute anytime, though entries near the overlap earn cleaner fills worth several pips per round trip. Backtest results keyed to specific sessions degrade sharply when the same system runs around the clock, a documented flaw in many retail strategies.
Part-time traders with day jobs often find the 8 to 11 am ET stretch ideal: the liquidity of a full session compressed into three hours around existing schedules.
Weekends, Gaps, and a Working Schedule
Fridays after 12:00 pm ET thin steadily, and position squaring into the close can produce moves that reverse by Monday. Weekend gaps stay a live risk despite continuous weekday trading: political events on Saturday hit the Sunday 5:00 pm ET open as a price jump, and stops offer no protection through the close. Monday opens deserve equal care, since the first Tokyo session after a news-heavy weekend often reprices Friday closes by a full range.
Pick one session and master it rather than grazing all four. Note the Asian range before London opens, execute during the overlap, avoid holding small-target trades through rollover, and keep size minimal across weekends. Consistent hours build a consistent read, and the session clock beside every ChokTrade chart keeps that routine honest week after week.