Forex markets open and close on a rolling basis across four major trading sessions, starting Sunday evening in New York and ending Friday afternoon in Tokyo

The foreign exchange market does not have a single opening bell. Instead, it operates continuously across time zones through four overlapping sessions: the New York session, London session, Tokyo session, and Sydney session. Each opens and closes at a fixed time in its local timezone, but the times shift relative to your clock depending on where you are and whether daylight saving time is in effect.

The market opens for the week on Sunday at 5 p.m. Eastern Time, when the Sydney session begins. It closes for the week on Friday at 4 p.m. Eastern Time, when the Tokyo session ends. Between those two points, at least one major market is always open, which is why forex trades 24 hours a day, five days a week.

Key Takeaways

  • The forex market runs Sunday 5 p.m. to Friday 4 p.m. Eastern Time, with no single opening time because trading moves between four geographic sessions.
  • The London session (8 a.m. to 4 p.m. GMT) and New York session (1 p.m. to 9 p.m. GMT) overlap for one hour and see the highest trading volume and price movement.
  • Times shift by one hour twice a year when daylight saving time begins and ends in the United States and Europe, but not at the same date.
  • Most retail forex brokers allow trading during all four sessions, but spreads (the cost to enter a trade) are tightest during the London and New York overlap.

The Four Trading Sessions and Their Local Times

The Sydney session runs from 10 p.m. to 7 a.m. GMT (Greenwich Mean Time). In Eastern Time, that is 5 p.m. Sunday to 2 a.m. Monday. Sydney opens the week and typically sees lighter volume than London or New York, though it can move the Australian dollar and New Zealand dollar sharply.

The Tokyo session runs from 12 a.m. to 9 a.m. GMT, or 7 p.m. to 4 a.m. Eastern Time. It is the second-largest session by volume and moves the Japanese yen, Australian dollar, and other Asia-Pacific currencies. Tokyo and Sydney overlap for one hour.

The London session runs from 8 a.m. to 4 p.m. GMT, or 3 a.m. to 11 a.m. Eastern Time. London is the largest forex market by volume — roughly 40 percent of all forex trades happen during this window. It is where most major economic data from Europe is released.

The New York session runs from 1 p.m. to 9 p.m. GMT, or 8 a.m. to 4 p.m. Eastern Time. New York is the second-largest session and overlaps with London for one hour (1 p.m. to 4 p.m. GMT). This overlap is when volatility and trading volume peak, because traders in both continents are active at the same time.

How Daylight Saving Time Affects Opening Times

The United States and Europe both observe daylight saving time, but they do not change on the same dates. The U.S. typically changes in mid-March and mid-November. Europe changes in late March and late October. For two to four weeks each year, the time difference between New York and London shifts by one hour.

When the U.S. has switched to daylight saving time but Europe has not yet, London is four hours ahead of New York instead of five. When Europe has switched but the U.S. has not, London is six hours ahead. If you trade during these transition windows, the session times you have memorized will be off by one hour. Most forex brokers and trading platforms automatically adjust their session clocks, but it is worth double-checking your broker's website or calling to confirm how they handle the changeover.

When Spreads Are Tightest and Volatility Is Highest

The spread is the difference between the buy price and sell price that your broker quotes you. A tight spread means lower cost to enter and exit a trade. Spreads are tightest during the London and New York overlap (1 p.m. to 4 p.m. GMT, or 8 a.m. to 11 a.m. Eastern Time) because volume is highest and competition among market makers is fiercest.

Volatility — the size and speed of price moves — also peaks during this overlap. If you trade a strategy that depends on large price swings, the London-New York window is usually the most active. If you trade a strategy that depends on tight spreads and low slippage (the difference between your intended price and your filled price), this window is also your best bet.

The Sydney and Tokyo sessions see wider spreads and lower volatility, especially for major currency pairs. They are better suited to traders who are patient or who focus on currencies that trade more actively in Asia, such as the Australian dollar or New Zealand dollar.

What Happens Outside Regular Session Hours

Some retail forex brokers allow trading during the gaps between sessions — for example, between the close of New York on Friday and the open of Sydney on Sunday. These hours are called the interbank market or over-the-counter (OTC) market. Spreads are much wider during these gaps because fewer traders and market makers are active.

If you hold a position over the weekend, your broker will charge you a rollover fee (also called a swap or overnight fee) to carry the position into the next trading week. The size of this fee depends on the interest rate difference between the two currencies in your pair and your broker's markup. Some brokers charge you; others pay you, depending on which direction you are trading and which currencies are involved.

How to Find Your Local Opening Times

To convert session times to your timezone, start with the GMT times listed above and count forward or backward. If you are in Pacific Time, subtract eight hours from GMT (or seven hours during daylight saving time). If you are in Central European Time, add one hour to GMT (or two hours during daylight saving time).

Most trading platforms display session times in your local timezone automatically. Your broker's website usually has a session calendar or a help page that shows opening and closing times for your region. If you trade across multiple sessions or travel frequently, setting phone reminders for key session opens — especially the London-New York overlap — can help you stay on schedule.

Frequently Asked Questions

Does forex open at the same time every day?

No. The market opens at different times each day because it moves between four geographic sessions. Sydney opens first on Sunday evening, then Tokyo, then London, then New York. The only constant is that at least one major market is always open Monday through Friday.

Can I trade forex on weekends?

Most retail brokers do not allow forex trading on weekends. The interbank market does trade over the weekend, but access is limited to large institutions. Your broker will close your trading platform on Friday evening and reopen it on Sunday evening when Sydney opens.

What time is best for day trading forex?

The London-New York overlap (8 a.m. to 11 a.m. Eastern Time) offers the tightest spreads and highest volatility, making it popular for day traders. However, the best time depends on which currency pair you trade and your strategy. Pairs involving the yen or Australian dollar may move more during the Tokyo or Sydney sessions.

Do I need to be awake during market hours to trade?

No. You can place orders before a session opens or set automated orders (called pending orders or limit orders) that execute when the price reaches a certain level, whether you are watching or not. However, you cannot monitor your position or react to news if you are not actively trading.

How do I know when major economic data will be released?

Economic calendars published by your broker or by sites like Investing.com show the date, time, and expected impact of major data releases (jobs reports, inflation data, interest rate decisions, and so on). These releases often cause sharp price moves, especially if the actual number surprises the market.