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Sessions and events

The London session:the centre of the forex day.

The London session is the European trading window, conventionally 08:00 to 17:00 London time. It is the largest forex centre by turnover, and its first hours and its overlap with New York are usually the most active of the day for the euro, sterling and dollar pairs. The hours are a convention, not an official schedule.

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When the London session is, in other time zones

Quoted in London time the session never moves: 08:00 to 17:00 all year. What moves is its time elsewhere, because the UK changes its clocks and not every country does, or does so on different dates.

The London session converted
ClockUK winter (GMT)UK summer (BST)
London08:00-17:0008:00-17:00
New York (Eastern)03:00-12:00, or 04:00-13:00 in the out-of-step weeks03:00-12:00
US Pacific00:00-09:00, or 01:00-10:00 in the out-of-step weeks00:00-09:00
India (IST)13:30-22:3012:30-21:30
Tokyo17:00-02:0016:00-01:00

Conventions, not official hours: sources differ by up to an hour at either end. Your GFN account runs on the instrument schedule, not on these. Some sources end the London session at 16:00 or 16:30.

Why London carries the most volume

London's business day overlaps the end of Asia and the start of New York, so it is the one centre that trades with both. The Bank of England reported that the UK accounted for 37.8% of global FX turnover in April 2025, the largest share of any country.

That depth is why the euro and sterling pairs typically do much of their daily range in London hours, and why overnight Asian ranges are often broken early in the London morning. Neither is a rule; both are tendencies that vary day to day.

The open, the middle and the overlap

Traders usually talk about London in three parts. The open, roughly the first two hours, is when European participants arrive and overnight positions are adjusted. The middle of the day is often quieter. From 13:00 UK time New York joins, and the overlap carries the US data calendar.

SMC traders call parts of these windows killzones - the London open in particular - and the power of three model describes a common reading of how a session's range develops. Those are interpretive frameworks, not properties of the session.

Step by step

How to identify it

Work out the London session for your clock from London time, not from a table you saved months ago.

  1. Start from 08:00-17:00 London time.
  2. Check whether the UK is on GMT or BST today: BST runs from the last Sunday of March to the last Sunday of October.
  3. Convert to your own clock. In IST, add 5:30 in winter and 4:30 in summer; in New York time, subtract 5 hours, or 4 in the out-of-step weeks.
  4. Mark 13:00 London time as the start of the usual New York overlap.
  5. Check the instrument schedule on your account for the actual hours of what you trade.

Worked example

The concept,walked through

A trader in Mumbai places the London session, described

An illustrative conversion in words. It is not a record of any real day's trading.

  1. 1. Winter dateIn January the UK is on GMT, so London's 08:00-17:00 is 13:30-22:30 IST.
  2. 2. Summer dateIn July the UK is on BST, one hour ahead, so the same session is 12:30-21:30 IST.
  3. 3. OverlapNew York joins at 13:00 London time: 18:30 IST in January, 17:30 IST in July.

The trader's IST routine has to move twice a year even though London's own hours never change. The session name tells them who is trading, not how price will move.

Common mistakes

Where tradersgo wrong

Keeping one local-time table all year

The London session in IST or US time moves by an hour twice a year, and the US and UK change on different dates.

Reading the London open as a signal

Early London often breaks the Asian range, but it also often reverses. A tendency is not an instruction.

Ignoring the data calendar in the overlap

US releases land after 13:00 London time. A position opened in quiet London hours carries into them.

Limitations

What it cannottell you

No chart concept predicts price. These are the limits worth keeping in view.

  • The session's hours are a convention with no official definition; activity does not start at 08:00 exactly.
  • The tendencies described here are averages across many days and do not hold on any particular day.
  • Volume statistics are national turnover figures, not a measure of how any single instrument will trade.

In an evaluation

Using it on asimulated account

A London-session strategy on a $100,000 simulated account meets the same daily loss limit as any other: $3,000 on Instant or $5,000 on 1 Step and 2 Step. The early London break of the Asian range is often a fast move, and fills there can differ from the price you saw, so size from your stop, risking something like $500 a trade, and allow for slippage.

The daily loss limit resets at the time shown in your dashboard, which is not necessarily the London open. Know which day a morning trade counts toward.

Trading rule

When can I trade?

The instrument schedule your account actually runs on.

Trading rule

Does slippage excuse a breach?

Fast opening moves are where fills slip most.

Trading rule

What is the daily loss limit?

The daily ceiling - 3% on Instant and 5% on 1 Step and 2 Step - and when it resets.

Questions

Asked aboutthis concept

Usually 03:00 to 12:00 Eastern. In the few weeks each year when the US and UK clocks are out of step, it is 04:00 to 13:00 Eastern.

By turnover, London is the largest forex centre, with 37.8% of global FX turnover in April 2025 according to the Bank of England. The overlap with New York is usually the most active stretch of the day.

Keep learning

Relatedlessons

Sessions and market events

Trading Sessions: Asia, London and New York

How the 24-hour forex day divides into the Asian, London and New York sessions, when they overlap, and why the hours move twice a year.

Sessions and market events

Asian Session: What Time It Opens

When the Tokyo-centred Asian session runs in UK, US and India time, and why its range matters to traders who never trade it.

Sessions and market events

New York Session: Times and What Moves It

The US trading window: its conventional hours, its overlap with London, and the scheduled releases that make its first hours the most volatile.

Smart money concepts (SMC and ICT)

Liquidity in Trading: Pools and Sweeps

Buy-side and sell-side liquidity, equal highs and lows, and what traders mean when they say price swept a level.

Sessions and market events

Opening Range Breakout (ORB) Strategy

ORB - marking the high and low of a session's first minutes and trading a break of either side, with the choices and risks that come with it.

Sources

What this pagerelied on

  1. BIS Triennial Survey of foreign exchange and OTC interest rate derivatives markets in April 2025 - UK data - Bank of England. Retrieved 22 September 2026. The UK's 37.8% share of global FX turnover in April 2025, the largest of any centre.
  2. When do the clocks change? - GOV.UK. Retrieved 23 September 2026. UK clocks: GMT in winter, BST (GMT+1) from the last Sunday of March to the last Sunday of October.
  3. Daylight saving time - National Institute of Standards and Technology. Retrieved 23 September 2026. US daylight time runs from the second Sunday of March to the first Sunday of November.

Educational content only, not investment advice or a recommendation to trade. Chart concepts describe what price has done; none of them predicts what it will do, and trading any strategy can lose money. Get Funded Now accounts are simulated and trade virtual funds. Last reviewed 22 September 2026.

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