Trading Session Times: London, New York, Tokyo and Sydney

The forex market never closes on weekdays – a fact that misleads many new traders into thinking all hours are tradable. In reality, liquidity flows with the working hours of major financial centres: Sydney and Wellington first, then Tokyo and Singapore, then London and Frankfurt, then New York and Chicago. When a centre is asleep, its currency pairs are thinly traded and spreads widen.

The industry convention is to speak of four overlapping sessions named by their dominant centre: Sydney, Tokyo, London, and New York. Sessions are not exchanges – FX has no centralised exchange outside of futures markets – but the liquidity effect is real. The BIS Triennial Survey (2022) documents that 43% of FX turnover is London-booked, 17% New York, 9% Hong Kong, 7% Singapore, and 5% Tokyo. Bookings correlate tightly with the local working hours of the major banks that dominate the two-way flow.

When London closes on Friday and Sydney does not open for another 40 hours, FX is effectively closed – you can see some venues pricing but you cannot trade at normal spreads. Most prop firms disable trading during the weekend window for exactly this reason.

Daylight saving warning: Tokyo does not observe DST. Sydney does, in the Southern Hemisphere reverse (AEDT begins October, ends April). London and NY observe DST in the Northern Hemisphere pattern but on slightly different dates – creating a brief "DST gap" each March and November when London and NY sessions are temporarily offset by 1 hour rather than 5. Any strategy that backtests well on "13:30 UTC" but suddenly underperforms in late October has almost certainly been affected by this DST transition.

Liquidity is not smooth across 24 hours. A typical weekday shows three peaks and two troughs:

Tokyo morning (00:00-02:00 UTC). Asian bank desks active. Major JPY pairs and AUD/USD see most action.

Asian lunch lull (05:00-07:00 UTC). First liquidity trough. Spreads widen on non-JPY pairs.

London open (08:00-10:00 UTC). Major liquidity surge. The "London open" is often volatile as overnight orders accumulate.

London-NY overlap (13:30-17:00 UTC). Highest liquidity of the day. Major US data prints here. The 4-hour window concentrates roughly half of daily volume.

NY afternoon fade (17:00-21:00 UTC). European desks closing, US desks reducing. Liquidity decays.

NY close to Sydney open (21:00-22:00 UTC). Second liquidity trough. Spreads can double. Avoid placing important orders here.

The chart below sketches this hourly profile for EUR/USD – the shape is similar for all major USD pairs.

This profile varies by pair. EUR/USD has the most skewed profile toward London-NY. USD/JPY shifts earlier toward Asia. AUD/USD and NZD/USD see relatively more Asian-session action because their central banks set rates during those hours.

Sydney (22:00-07:00 UTC). Smallest volume. Typically sets the tone for AUD, NZD and commodity-linked pairs. Range-bound for majors. Spreads 2-5× London levels. Good for swing entries that are pre-positioned for the next day but bad for intraday breakouts.

Tokyo (00:00-09:00 UTC). JPY-centric. USD/JPY, EUR/JPY, GBP/JPY see most of their daily range during this period. Bank of Japan interventions historically happen in Tokyo. The classic "Asian range" forms as the high/low of this session, often tested and broken at London open.

London (08:00-17:00 UTC). Highest single-session volume. The world's largest FX trading centre. EUR and GBP pairs move most. London open (08:00) frequently triggers a 20-40 pip "opening range" move on majors – the London open breakout strategy hunts this.

London-New York overlap (13:30-17:00 UTC). The prime window. US data releases, maximum liquidity, tightest spreads, biggest available moves. If you can only trade one window, this is the one.

New York (13:30-22:00 UTC). Extends until Europe closes, then fades. USD pairs dominate. US equity open (14:30 UTC) is a secondary liquidity spike. Late NY (20:00-22:00) is quieter and often ranges as desks flatten into close.

The London open is the single most-studied hour in retail FX education. Two mechanisms drive its distinctive behaviour:

1. Asian range breakout. Overnight orders accumulate during the quiet Asian session. At 08:00 UTC, London desks come online and execute client and proprietary flow that had been parked. This often manifests as a rapid breakout of the Asian range (the Tokyo session's high-low).

2. European options expiries. The 10:00 UTC window is the traditional London option-expiry fix. Large positions are managed into and out of this time, contributing to directional moves on major pairs.

The practical implication: a spike at 08:00-08:15 UTC is often continuation in the intended direction, not a fake move. A spike followed by reversal into the Asian range is a "liquidity grab" – the opposite trap pattern. Distinguishing them requires looking at the underlying volume and confirming with the open of the subsequent 15-minute bar.

This is also the point at which daily candles "officially" reset for European-style FX traders. The daily open/high/low on most MT4/MT5 brokers is referenced to server time (commonly GMT+2 or GMT+3), which means the London 08:00 UTC open is one of the two most important reference prices of the day (the other being the 22:00 UTC daily close on GMT+2 broker time).

Trying to run a London-open breakout strategy in the Tokyo session will produce mediocre results – the structural liquidity is not there. Conversely, running a Tokyo range-fade strategy at the NY overlap will be obliterated by US data prints. Match tool to environment. Traders who want to run more than one instrument or session at once sometimes spread them across a two-account setup such as the Prime Duo family.

Daylight-saving transitions silently distort session backtests and mental models. The pattern:

March (second Sunday). US and Canada move to DST. NY session starts one hour earlier in UTC (12:30 UTC instead of 13:30). Europe does not change for another two weeks.

Late March (last Sunday). UK and most of Europe move to DST. London session starts one hour earlier in UTC (07:00 instead of 08:00). London-NY overlap resumes normal alignment.

Early November (first Sunday). US and Canada return to standard time. NY session shifts back to 13:30 UTC. Europe does not change for another week.

Late October (last Sunday in Europe). Europe returned to standard time one week earlier. Now NY returns, and the two align again.

Result: twice a year there is a one-week window where London-NY overlap is compressed to 3 hours instead of 4, because one side has shifted and the other has not. Any backtest that treats "London open" as a fixed UTC time across years will silently misalign in these weeks. The fix: anchor session times to local civil time (Europe/London, America/New_York) rather than raw UTC, and let the platform handle DST.

Many prop firms derive session-specific rules that new traders miss until they breach them:

News embargo times. Usually centred on London open (Eurozone data), NY morning (US data), and late NY (Fed speakers). If you trade outside these windows you avoid most embargo risk. See the news-release guide.

Weekend hold restrictions. Most firms require positions closed by Friday NY close (22:00 UTC or 21:00 UTC DST). Some enforce this strictly; some allow holds subject to weekend-gap risk provisions.

Session-specific max leverage. A small number of firms reduce permitted leverage outside liquid hours (e.g., full leverage London-NY, halved Tokyo, quartered Sydney). Designed to stop traders over-sizing in thin markets.

Session-specific instrument availability. Some index futures and commodities are not available during Asian hours because the underlying exchange is closed. Check the firm's instrument schedule – and the instruments available on each account – before assuming 24-hour access.

The prop firm checklist prompts for these session-specific rules as part of pre-evaluation due diligence.