The short answer
The forex market is open 24 hours a day, five days a week, opening Sunday evening and closing Friday evening (New York time). It runs through four regional sessions — Sydney, Tokyo, London and New York — that hand off around the clock. The most active, tightest-spread window is the London/New York overlap. When you trade matters: liquidity changes spreads, volatility and how cleanly price moves.
Is forex really 24 hours?
Yes — 24 hours a day on weekdays. Because there is no single central exchange, trading passes between financial centres around the globe, so somewhere is always open from the Sunday evening open to the Friday evening close (New York time).
But “always open” is not “always worth trading.” Liquidity — and therefore spreads and how smoothly price moves — varies enormously across the day. The clock is a tool, not a licence to trade at any hour.
The four trading sessions
The day is conventionally split into four sessions, named for their financial centres:
- Sydney — the week's opener; quiet, thinner liquidity.
- Tokyo (Asian) — active in JPY and AUD pairs.
- London (European) — the largest session by volume; deep liquidity, tight spreads.
- New York (US) — high activity, especially around US data releases.
Each currency tends to be most active during its home session, which is why the pair you trade should influence when you trade it.
Session overlaps
The busiest, most liquid windows are where two sessions are open at once. The big one is the London/New York overlap — the hours when both Europe and the US are trading. Volume peaks, spreads are tightest, and the majors move with the most conviction.
There is a smaller Tokyo/London overlap as Asia hands off to Europe. If you can only trade part of the day, the overlaps are usually the highest-quality hours.
The best time to trade
For most beginners trading the majors, the London session and the London/New York overlap offer the best mix of liquidity and clean movement. Tight spreads lower your cost; genuine volume means moves are less likely to be random noise.
The quiet hours — late US afternoon into the Sydney open — often chop sideways on wider spreads, which is a difficult, low-reward environment to learn in. You do not have to trade every hour; trade the good ones.
Weekend gaps and news
The market closes Friday evening and reopens Sunday evening. Events over the weekend can cause price to gap — open at a different level than it closed — which can jump straight past a stop-loss. This is a specific risk of holding positions over the weekend.
Scheduled news during the week matters too: around high-impact releases, spreads widen and price can move violently. Know when major data is due for the pairs you trade, and decide your plan before the release, not during it.
A note on time zones
Session times shift with daylight saving and are usually published in a single reference zone. Rather than memorise clock times, learn the sequence — Sydney, Tokyo, London, New York — and check the current local times for your own zone against a session clock.
What matters is not the exact hour but trading when your pair is liquid. Match the pair to its session, favour the overlaps, and let the quiet hours pass.
Frequently Asked Questions
What are the four forex trading sessions?
Sydney, Tokyo (Asian), London (European) and New York (US). They hand off around the clock, so the market stays open 24 hours a day on weekdays.
Is the forex market open 24 hours?
It is open 24 hours a day, five days a week — from the Sunday evening open to the Friday evening close, New York time. It is closed over the weekend.
What is the best time to trade forex?
For the majors, the London session and the London/New York overlap offer the deepest liquidity, tightest spreads and cleanest moves, which makes them the highest-quality hours for most traders.
What is the London/New York overlap?
It is the window when both the London and New York sessions are open at the same time. It has the highest volume and tightest spreads of the day, and the majors tend to move with the most conviction.
What is a weekend gap in forex?
Because the market closes over the weekend, events during that time can cause price to open Sunday at a different level than it closed Friday. This gap can skip past a stop-loss, which is a specific risk of holding trades over the weekend.