The market that’s open all week but not all the time Sydney, Tokyo, London and New York: how the FX sessions overlap and when spreads tighten

By Daniel Acosta · Updated 6 July 2026 · 6 min read

If you’ve ever wondered whether the foreign-exchange market closes for the night — or whether the hour you convert money actually matters — this guide is for you. We’ll walk through the four trading sessions, where they overlap, and why timing affects what a conversion costs rather than where a rate is headed. It’s for anyone trying to understand when FX is open, and the difference between casually converting money and actively trading it.

The quick version

There is no single building where currencies trade. The FX market is decentralized — a global network of banks and brokers — so it has no opening bell. Instead it runs roughly 24 hours a day, five days a week. The week opens early when Sydney comes online and closes after New York winds down on Friday. Across those days, four regional sessions hand off to one another: Sydney, Tokyo, London and New York. The busiest stretch is the London–New York overlap, when the most money is changing hands and spreads are usually at their tightest. Outside those peaks — and especially over the weekend, when trading stops entirely — conditions thin out. None of this predicts direction; it mostly affects how much a conversion costs to execute.

Open all week, but not always the same

A stock exchange has a front door that opens at a set hour and shuts at another. FX doesn’t. Because trading happens directly between institutions around the world, somewhere is always awake during the business week, so the market stays continuously open from the start of the week until Friday evening in New York. But “always open” is not the same as “always busy.” A currency pair behaves very differently at 3 a.m. in a quiet handover between regions than it does when two major financial centres are trading at once. The clock doesn’t change whether you can trade; it changes the conditions under which you do.

One practical note before the timetable: every session time below is given in UTC and is approximate. Financial centres shift with daylight saving at different times of the year, so the exact hours drift by an hour here and there. Treat the numbers as a map of the rhythm, not a precise schedule.

The four sessions

The trading week is usually described as four overlapping sessions, named for the financial centre that anchors each one. They flow westward around the globe: as one region’s working day ends, the next is beginning.

Reading the table These windows are approximate and shift with daylight saving in each region. They overlap on purpose — the hours don’t hand off cleanly, and the overlaps are exactly where the action concentrates.

The overlaps, and where liquidity is deepest

The London–New York overlap is the deepest-liquidity, tightest-spread window of the trading day. The interesting moments are not the sessions themselves but the seams between them, when two centres are open at once. More participants trading simultaneously means more orders on both sides of the market — what traders call deeper liquidity. Two overlaps stand out:

• Tokyo and London share a short window as Asia’s afternoon meets Europe’s morning. Activity picks up, though it’s the quieter of the two overlaps.
• London and New York overlap for several hours when both of the world’s largest FX centres are trading at the same time. This is the deepest, most liquid stretch of the entire week — the period when the most money moves through major currency pairs.

If you ever read that “the market is most active in the early afternoon, London time,” this overlap is why. It isn’t a rule someone set; it’s simply when the most hands are on the same table.

What each session actually trades

Each session has a personality, and it comes from who is at their desk. A currency tends to be most actively traded when its home region is open, because that’s when the local banks, exporters and data releases are all live at once. Knowing which pairs come alive in which window explains a lot of why a chart looks sleepy one hour and jumpy the next.

The Sydney and Tokyo stretch is where the Asian day trades. The Australian dollar and New Zealand dollar are naturally more responsive here, and the Japanese yen does most of its work in Tokyo hours — yen crosses such as USD/JPY and EUR/JPY often set their tone before Europe wakes up. This is also when Asian economic figures land: Australian employment and inflation prints, Chinese activity data, Bank of Japan announcements. If a pair has an Asian leg, this is its home game.

London is the heavyweight. It is the single largest FX centre by volume, and when it opens the whole market tends to shift up a gear. The euro and the British pound are at their most active here — EUR/USD, GBP/USD and EUR/GBP all trade heavily — and because London straddles the boundary between the Asian and American days, a great deal of the week’s turnover passes through it. Much of what looks like “the market moving” on a major pair is really the London session doing what it does.

New York is the dollar’s session. Anything quoted against the US dollar — which is most major pairs — can pick up when America comes online, and this is when the US economic calendar fires: non-farm payrolls, inflation reports, Federal Reserve decisions. The first few hours, while London is still open, carry most of New York’s energy; once London closes for the day, activity tends to fade toward the New York close. So the liveliest pair at any given hour is usually the one whose home currency is trading — yen in Tokyo, sterling and euro in London, dollar-based pairs in New York — with the majors busiest of all when London and New York trade together.

A caveat worth keeping: “active” describes how much a pair moves and how often, not a promise of profit. A lively session simply means more participants and, usually, tighter spreads on that pair; it does not tell you which direction anything is going. If your pair is quiet at the hour you happen to be looking, that is often just the calendar — its home market is asleep — rather than a signal that something is about to happen.

When spreads tighten and when they widen

This is where the clock touches your wallet. The bid–ask spread — the gap between the price to buy and the price to sell — tends to be narrowest when liquidity is deepest, because lots of competing participants keep the two prices close together. So during the London–New York overlap, spreads on major pairs are typically at their tightest, and the cost of getting in and out is lowest.

The reverse is also true. In thin hours — late in the New York session, or the quiet stretch before Tokyo really gets going — fewer participants mean wider spreads and prices that can jump on relatively small orders. Holidays in a major financial centre can thin things out too, even on a weekday.

1. Decide what you’re doing: a one-off conversion, or active trading where execution cost matters per transaction.
2. If cost-per-trade matters, note which session you’re in — tighter spreads cluster around the busy overlaps.
3. Check the live spread on the platform’s own screen before you commit; don’t assume it from the hour alone.
4. Be wary of thin-hour quotes and of any pressure to act on a sudden “move” when the market is quiet.

Daylight saving: why the hours you memorised shift twice a year

The session times in the table are pinned to local market clocks, not to UTC. London opens when it is morning in London; New York opens when it is morning in New York. Those regions put their clocks forward in spring and back in autumn — but not on the same dates, and not every region does it at all. So the moment you translate a session into UTC, the number moves a few times a year, and for a couple of awkward weeks the regions are out of step with each other.

A worked example makes it concrete. Europe and North America change their clocks on different weekends in both spring and autumn. In the gap between those changes, the London–New York overlap can sit an hour earlier or later in UTC than it does the rest of the year. Meanwhile Tokyo, which does not observe daylight saving, stays put — so the Tokyo–London handover shifts underneath it. If you have memorised the overlap as “13:00 UTC,” you can find yourself an hour off for a fortnight without anything actually changing in the market.

The fix is not to memorise UTC at all. Anchor the sessions to a city clock instead — “the busy window is early afternoon London time” holds true year-round, because it moves with London. When you need the exact figure, read it off the platform, which already accounts for whatever the clocks are doing this week. Treat any fixed UTC timetable, including the one above, as a rough map that drifts.

This mostly matters to two kinds of reader. If you follow the market at the same clock time each day, a daylight-saving shift can make a normally busy hour look unexpectedly thin, or vice versa, until you adjust. And if you rely on a printed or half-remembered timetable, twice a year it will quietly be an hour wrong. Neither is dangerous on its own; both are easy to trip over. The habit that saves you is simple — think in city time, verify in the platform.

The weekend gap

For all its “around the clock” reputation, FX does close. Trading stops for the weekend after the New York session ends on Friday and doesn’t resume until Sydney opens the new week. During those roughly two days, you generally can’t trade most currency pairs at all.

The catch is that the world doesn’t pause just because the market does. News, elections and economic events still happen over the weekend. When trading reopens, the first prices can appear at a noticeably different level than Friday’s close — a jump with no trades in between. That jump is called a gap, and it matters most to anyone holding a position over the weekend, because the market can reopen past the level where they expected to act.

Trading around news releases

Sessions are the slow rhythm of the week; economic releases are the sudden jolts inside them. Big scheduled figures — a central-bank rate decision, an inflation print, US non-farm payrolls — land at a fixed local time, and they cluster in the home session of the currency involved. US data hits during New York hours; euro-area and UK data during London; Australian and Japanese data during the Asian session. The calendar is public, so the timing is no surprise, even though the number is.

What happens in the seconds around a release is worth understanding even if you never intend to trade it. Liquidity can thin out just before the number as participants step back, then the price can gap and whip around for a few minutes as everyone reprices at once. Spreads often widen in that window — sometimes sharply — so the cost of getting in or out spikes at exactly the moment the screen looks most exciting. A quiet pair can travel a surprising distance before it settles.

None of that is a strategy, and this guide is not about how to trade the news. The practical takeaway is defensive: know when the major releases for your pair are scheduled, and recognise that the minutes around them are unusually expensive to transact in. If you are simply converting money, the same lesson applies in miniature — there is rarely any reason to hit “convert” in the thirty seconds after a big print, when spreads are at their widest. Let the dust settle first.

It also helps to know that not every release carries the same weight. A headline interest-rate decision or a key jobs figure can move a currency for the rest of the session; a minor, second-tier statistic may pass with barely a flicker. You do not need to track them all. Knowing the two or three big scheduled events for the week — and roughly when they land in your own time zone — is enough to avoid being blindsided by a burst of volatility you could simply have waited out.

Converting vs trading: does timing matter?

Here’s the reassuring part for most readers. If you’re simply converting money — paying for something abroad, sending a transfer, swapping holiday cash — you do not need to time the sessions. The amounts ordinary people convert are tiny next to wholesale volumes, and the difference a few hours makes to a major pair’s spread is usually negligible against the provider’s own margin. What costs you is the gap between the rate you’re given and the mid-market rate, not the minute on the clock. Compare providers, not hours.

Session timing earns its keep for active trading, where you pay a spread on every entry and exit and those costs compound. There, choosing liquid hours over thin ones is a genuine, repeatable saving. The distinction is worth holding onto: timing is a trading concern about execution cost, not a conversion concern about direction.

This around-the-week-but-not-around-the-clock rhythm is also the natural setup for a contrast we draw elsewhere: the crypto market never closes, with no sessions and no weekend gap. Whether that’s an advantage or just a different set of trade-offs is the subject of a separate guide.

Timing mistakes to avoid

Two errors come up again and again around market hours:

• Trading the thin hours. Late-night quiet periods feel calm, but wider spreads and jumpy prices make them a poor time to execute, especially for beginners. The market being open doesn’t mean it’s a good moment to act.
• Ignoring weekend-gap risk. Assuming “I’ll just close it Monday” overlooks that Monday’s open can be far from Friday’s close. If you hold positions, plan for the gap before the weekend, not after it.

Questions people ask

Is the forex market really open 24 hours?
Roughly 24 hours a day, but only five days a week. It opens early in the week with Sydney and closes after New York on Friday, then pauses over the weekend before reopening.

What is the best time to trade?
For execution cost, the London–New York overlap usually offers the deepest liquidity and tightest spreads on major pairs. That’s a statement about cost, not a prediction about which way prices will move.

Do I need to time the sessions just to convert money?
No. For ordinary conversions the provider’s margin dwarfs any hour-to-hour difference in the spread. Focus on the rate against the mid-market rate, not the clock.

Why do the session hours in different sources not match?
Because they’re approximate and shift with daylight saving in each region. Different sources round the windows differently. Use them to understand the rhythm, then check the live market for exact conditions.

Last updated 6 July 2026. This guide explains how FX trading hours work; it is not investment, tax or legal advice. Session times are approximate and shift with daylight saving — always confirm live conditions on the platform’s own screen, and check the rules that apply where you live.

Related guides

• FX vs the crypto market: the one that never closes
• Bid, ask and the spread: why there are two prices
• Major currency pairs and how they trade