ModulesModule 4Ch. 6: Trading Sessions — London, New York, Tokyo, and Sydney
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Trading Sessions — London, New York, Tokyo, and Sydney

Module 4: Forex Trading

6.1

The market runs 24 hours but it does not feel like the same market all day

Yes, forex runs 24 hours a day five days a week. But the market you are trading at 3am is not the same market you are trading at 3pm. The participants are different. The liquidity is different. The volatility is different. The typical price movement is different.

Forex follows the sun around the globe. As each major financial centre opens for business, a new session begins. Trading volume surges. Volatility picks up. The market comes alive. As that centre closes and the baton passes to the next time zone, activity shifts.

Understanding this rhythm, knowing when your preferred pairs are most active, when the best opportunities tend to appear, and when the market is at its most unpredictable, is one of the most practical edges a retail trader can develop.

6.2

The four major sessions

The global forex market is organised around four major trading sessions. They overlap, they hand off to each other, and their combined activity creates the continuous market that forex is known for.

The Four Major Trading Sessions

SessionOpens (GMT)Closes (GMT)Most Active PairsShare of Daily Volume
Sydney10pm7amAUD/USD, NZD/USDSmallest session
Tokyo12am9amUSD/JPY, EUR/JPY, AUD/JPY~6% of daily volume (approx., varies by source)
London8am5pmEUR/USD, GBP/USD, all majors~38% of daily volume (approx., varies by source)
New York1pm10pmUSD/JPY, EUR/USD, GBP/USD~17% of daily volume (approx., varies by source)
London/NY Overlap1pm5pmAll major pairs at peak activityHighest volume of the day
6.3

The overlap , where the real action is

The four-hour window when London and New York are both open simultaneously is where the vast majority of significant forex moves occur.

Think about what is happening during this overlap. European banks are executing their afternoon business. American banks are starting their morning. Institutional orders from both sides of the Atlantic are hitting the market simultaneously. US economic data is releasing. European central bankers are giving afternoon speeches. The combined liquidity and volume during this window dwarfs any other period of the day.

For most forex traders, particularly those trading EUR/USD, GBP/USD, or any dollar-major, this overlap is the primary trading window. The moves are real, the liquidity is deep, slippage is minimal, and the setups that develop during this period tend to have more follow-through than those that form during off-peak hours.

If your schedule allows you to be at your desk between 1pm and 5pm London time, which is 8am to 12pm New York time, you are trading during the period when the market is at its best.

Forex Market Activity by Hour , Average Volatility Index
6.4

The Asian session , opportunities in yen pairs

Not every trader can or wants to trade during the London-New York overlap. For those who trade during Asian hours, the yen pairs offer the most consistent opportunities.

USD/JPY, EUR/JPY, and AUD/JPY are all most active during the Tokyo session. Japanese economic data releases during this period can cause meaningful moves. The Bank of Japan''s communications, released during Tokyo hours, are closely watched by the whole market.

The Asian session also sometimes sets the tone for the London session that follows. The levels that formed during Asian trading, the overnight high and low, areas of consolidation, levels where price spent significant time, often become key reference points once London traders arrive and begin their analysis.

Outside of yen pairs, many other major pairs can be quite thin during Asian hours. EUR/USD and GBP/USD during Asian hours often trade in narrow ranges with limited volume. Breakouts that occur during these hours have a higher probability of being false breakouts. The volume simply is not there to sustain a directional move.

6.5

Monday opens and Friday closes , the edges of the week

Monday''s open is when the market reopens after the weekend. Any news, geopolitical events, or significant developments that occurred while markets were closed are priced in as soon as Sydney opens. This can cause gaps, sudden jumps in price from Friday''s close to Monday''s open, particularly in pairs affected by weekend news.

Friday''s close is a time when many institutional traders reduce their positions before the weekend. They do not want to hold large positions over two days when markets are closed and unexpected news can occur. This institutional position-squaring can cause price movements that are not fundamentally driven and can be confusing for technical traders.

Many experienced traders reduce their own activity and position sizes heading into the weekend. The gap risk of holding over a weekend, particularly during periods of elevated geopolitical tension, is an asymmetric risk that is worth managing carefully.

Key Takeaways
1
The forex market runs 24 hours but activity, liquidity, and volatility vary dramatically by session. Knowing when your pairs are most active is a practical edge.
2
The four major sessions are Sydney, Tokyo, London, and New York. London accounts for roughly a third to two fifths of daily global forex volume depending on the data source, making it the most important single session.
3
The London-New York overlap from 1pm to 5pm London time is the single most active four-hour window in forex. Most significant moves in major pairs occur during this period.
4
Asian session hours favour yen pairs. USD/JPY and yen crosses are at their most active during Tokyo hours while EUR/USD and GBP/USD tend to be quiet.
5
Monday opens carry gap risk from weekend news. Friday closes see institutional position-squaring. Both periods warrant extra caution.

Chapter Quiz

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