Forex markets operate 24 hours a day, five days a week, because trading moves across time zones as each major financial center opens and closes

The foreign exchange market has no single physical location. Instead, it is a network of banks, brokers, and traders spread across the globe. When it is 9 a.m. in Tokyo, traders there are active. When Tokyo closes at 3 p.m., Sydney and other Asia-Pacific centers are already trading. By the time Asia winds down, London is opening. When London closes, New York opens. This relay means currency pairs are always trading somewhere, and you can enter or exit a position at almost any hour of the day or night, Monday through Friday.

The practical consequence is that forex never truly closes during the business week. However, liquidity — the ease of buying or selling without moving the price — varies sharply by time of day. The busiest hours, when spreads are tightest and prices move most predictably, occur during the overlap between two major centers. The slowest hours, when spreads widen and slippage is common, occur in the middle of the night in all major time zones.

Key Takeaways

  • Forex trading runs Monday through Friday, 24 hours a day, because markets in different time zones operate in sequence.
  • The four major trading sessions are Tokyo (Sunday 8 p.m. to Monday 4 a.m. ET), London (3 a.m. to 12 p.m. ET), New York (8 a.m. to 5 p.m. ET), and Sydney (5 p.m. Sunday to 2 a.m. Monday ET), all in Eastern Time.
  • Liquidity is highest during overlaps between sessions, especially the London-New York overlap from 8 a.m. to 12 p.m. ET, when spreads are narrowest and execution is fastest.
  • The market closes entirely on weekends and does not reopen until Sunday evening in the United States, meaning you cannot enter new positions from Friday 5 p.m. ET until Sunday 5 p.m. ET.
  • Spreads widen and slippage increases during low-liquidity hours, typically between 2 a.m. and 7 a.m. ET, making it more expensive to trade at those times.

The Four Major Trading Sessions and Their Times

The forex market is divided into four main sessions, each centered on a major financial hub. These sessions overlap, but each has its own peak hours when local traders and institutions are most active.

Tokyo (Asia-Pacific) Session runs from 7 p.m. Sunday to 4 a.m. Monday Eastern Time. This is when Japanese banks, hedge funds, and retail traders in Asia are most active. The yen, Australian dollar, and New Zealand dollar tend to move most during this window. Volume is moderate compared to London and New York, and spreads are wider than during the overlap hours.

London Session opens at 3 a.m. Eastern Time and closes at 12 p.m. ET. London is the largest forex trading hub in the world by volume. The pound, euro, and Swiss franc are most active during London hours. Spreads tighten significantly once London opens because volume surges.

New York Session runs from 8 a.m. to 5 p.m. Eastern Time. This is when U.S. banks, funds, and traders dominate. The dollar is most volatile during New York hours. Volume is the highest of any single session, and spreads are at their tightest.

Sydney Session opens at 5 p.m. Sunday ET and closes at 2 a.m. Monday ET. This is the smallest of the four sessions by volume. It marks the start of the trading week in the Southern Hemisphere and sets the tone for Asian trading that follows.

When Spreads Are Tightest and Liquidity Is Highest

Spreads — the difference between the bid and ask price — are not fixed. They widen when few traders are active and tighten when volume is high. The tightest spreads occur during the overlap between London and New York, from 8 a.m. to 12 p.m. Eastern Time. During this four-hour window, both the world's largest and second-largest trading centers are open at the same time, creating peak volume and competition among market makers.

The London-New York overlap is when most professional traders execute large positions. If you are trading a major pair like EUR/USD or GBP/USD, this is when you will see the most predictable price action and the lowest cost to enter or exit. A spread that might be 1.5 pips during peak hours can widen to 3 or 4 pips during slow hours.

The Tokyo-London overlap, from 3 a.m. to 4 a.m. ET, also sees a brief spike in volume, though it is smaller than the London-New York overlap. Outside these windows, liquidity drops noticeably. The slowest hours are typically 2 a.m. to 7 a.m. ET, when all major centers are closed or just opening.

Weekend Closure and the Sunday Evening Reopening

Forex markets close completely at 5 p.m. Eastern Time on Friday and do not reopen until 5 p.m. ET on Sunday. This means there is a 48-hour gap each week when you cannot enter new positions. Any open positions you hold over the weekend are subject to gap risk — the possibility that the market will reopen at a significantly different price on Sunday evening if major news broke over the weekend.

The Sunday reopening begins with the Sydney session. Price action is often volatile during the first hour of Sunday trading because traders are reacting to news that accumulated over the weekend, and liquidity is still building. If you hold positions into the weekend, check your broker's policy on weekend holding costs and overnight financing charges, which vary by broker and currency pair.

Some brokers offer limited weekend trading through alternative platforms or cryptocurrency-based forex products, but these are not the standard interbank forex market and carry different risks and costs.

How Time Zones Affect Your Trading Schedule

Your local time zone determines when you can trade conveniently. If you are on the U.S. East Coast, the London-New York overlap (8 a.m. to 12 p.m. ET) falls during normal business hours. If you are in California, that same overlap is 5 a.m. to 9 a.m. Pacific Time — early but manageable. If you are in Europe, the London session is during your business day, but the New York session is evening or night.

Traders in Asia face the opposite problem: the Tokyo session is during their business day, but London and New York are overnight. Some traders choose to focus on sessions that align with their waking hours. Others use automated trading systems or alerts to trade sessions when they are asleep. There is no single "best" time to trade — it depends on your schedule, your strategy, and which currency pairs you focus on.

Keep in mind that forex brokers quote times in different zones. Always confirm whether your broker is using Eastern Time, GMT, or another standard. A one-hour error in your understanding of session times can cause you to trade during the wrong liquidity window.

Economic News Releases and Volatile Trading Hours

Certain times within each session are more volatile than others because of scheduled economic data releases. The U.S. releases major economic reports (jobs data, inflation, GDP) at 8:30 a.m. ET, usually on Fridays for employment reports. The European Central Bank and Bank of England release decisions at set times during London hours. Japan releases data during Tokyo hours.

These releases can cause sharp, sudden price moves in seconds. Spreads often widen just before a major release and then tighten once the initial reaction settles. If you are a scalper or day trader, these windows can offer opportunity. If you prefer stable, predictable price action, you may want to avoid trading in the 30 minutes before and after major releases.

Your broker or a financial calendar website will list the scheduled releases for each day. Knowing when these occur helps you decide whether to be active or step back during those hours.

Frequently Asked Questions

Can I trade forex on Saturday or Sunday?

No. The interbank forex market closes at 5 p.m. ET Friday and does not reopen until 5 p.m. ET Sunday. Some brokers offer weekend trading through alternative products or cryptocurrency pairs, but these are not the standard forex market and carry different costs and risks.

What time should I trade if I want the tightest spreads?

Trade during the London-New York overlap, 8 a.m. to 12 p.m. ET. This is when volume is highest and spreads are narrowest. If that window does not fit your schedule, the London session alone (3 a.m. to 12 p.m. ET) is the next best option for tight spreads.

Do I have to pay extra to hold a position over the weekend?

Yes. Most brokers charge overnight financing, also called swap or rollover fees, for positions held past 5 p.m. ET on Friday. The amount depends on the currency pair, your broker, and current interest rates. Check your broker's fee schedule before holding positions into the weekend.

What happens if major news breaks over the weekend?

The market will reopen Sunday at 5 p.m. ET and may gap — open at a significantly different price than Friday's close. If you hold positions over the weekend, you are exposed to this gap risk. Some traders close all positions before Friday close to avoid it; others accept the risk as part of their strategy.

Is the Tokyo session a good time to trade if I am in the United States?

The Tokyo session runs 7 p.m. Sunday to 4 a.m. Monday ET, which is overnight for U.S. traders. It is possible but inconvenient unless you use automated systems. Liquidity is also lower than London or New York, so spreads are wider. Most U.S.-based traders focus on London and New York hours instead.