ICT Kill Zones Explained • Times, Sessions, and Why They Work

Global foreign exchange turnover averaged $9.6 trillion a day in April 2025, a record and a 28% jump from three years earlier. That volume does not arrive as an even trickle across 24 hours. Sales desks in the United Kingdom booked roughly 38% of it, and four hubs — the UK, the US, Singapore and Hong Kong — handled about three quarters of the total between them. Those desks keep office hours. So how does ICT Kill zones fit in?

That is the entire mechanism behind ICT kill zones, and it is the part almost every guide leaves out. Most publish a table of four ICT kill zone windows, assert that smart money is active inside them, and leave you to take it on faith. The times are right. The reasoning is missing — and without the reasoning you have no way of knowing when the windows will let you down.

Here is the thesis, stated plainly. ICT kill zones are not hours when price obeys a different rulebook. They are the hours when the participants large enough to produce the liquidity sweeps, displacement legs and imbalances that ICT methodology describes are actually at their desks, repricing risk and clearing flow. The clock does not cause the move. It tells you when the people who cause moves are present. That distinction is what turns session timing from superstition into a usable filter, and it matters more inside prop trading evaluations than anywhere else, because there every wasted hour of screen time carries a real risk budget behind it.

ICT kill zones are four intraday windows — Asian, London, New York and London Close — when institutional participation and volatility concentrate. Defined in New York local time, they run 7:00 PM to 10:00 PM, 2:00 AM to 5:00 AM, 7:00 AM to 10:00 AM, and 10:00 AM to 12:00 PM respectively.

What ICT Kill Zones Actually Are

ICT kill zones are time filters, not entry signals. That is the first thing to fix, because the name suggests something more dramatic than the concept delivers.

The framework comes from Michael Huddleston, who publishes under the name Inner Circle Trader, and you will see the concept written as both ICT kill zones and ICT killzones — same framework, two spellings. He divides the trading day into the four ICT kill zones where, in his observation, the market is most likely to produce a decisive move rather than aimless drift. Each window sits inside a broader session but is much narrower than it — the London session runs roughly nine hours, while the London ICT kill zone is a three-hour slice of it. The compression is deliberate. A session tells you which desks are open. ICT kill zones tell you when those desks are most likely to be doing something that shows up on your chart.

What shows up is the vocabulary the rest of the methodology is built on. An order block requires an impulse large enough to break structure, and that impulse requires participants large enough to create it. The same is true of a shift in market structure — the BOS and CHoCH events that confirm a change in intent are only meaningful when real size is behind them. Outside ICT kill zones, thin books produce moves that look structurally identical and mean nothing.

Why Volume Concentrates Where It Does

Session timing concentrates moves inside ICT kill zones because three separate forces all land on the clock at once, and none of them has anything to do with chart patterns.

The first is staffing. Currency dealing is a relationship business booked by human sales desks in specific cities, and those desks work local hours. When London’s desks are live, roughly two-fifths of the world’s foreign exchange turnover is being intermediated in one time zone. That is not a subtle skew.

The second is repricing. Markets do not close, but participants do. Every session open forces a wave of re-marking against whatever moved while the desk was dark — overnight headlines, Asian data, positioning that drifted. This is why session opens produce expansion rather than continuation, and why an imbalance left behind by a fast repricing move so often forms in the first hour of a kill zone rather than the fifth hour of a quiet session.

The third is scheduled flow. Economic releases, options expiries and benchmark fixings are calendar events pinned to fixed times. US inflation and employment data land at 8:30 AM New York time. The WM/Reuters benchmark fix — the rate index funds and asset managers are valued against — is struck at 4:00 PM London time. Enormous volume clusters in a few minutes around it, mechanically, every single trading day. Those pins fall inside ICT kill zone windows, not by coincidence but by construction. Which pins matter to you also depends on what you trade, since the best forex currency pairs for a given window are the ones whose home desks are staffed in it.

The Four ICT Kill Zones and Their Exact Times

All four ICT kill zones are defined in New York local time. Write that down, because it is the single most common source of error when traders set them up, and the next section is entirely about what goes wrong when you ignore it.

Asian ICT kill zone — 7:00 PM to 10:00 PM. Tokyo and Sydney are the live desks. Volume is the lowest of the four windows and price typically builds a range rather than trending. Yen crosses are the most responsive instruments here.

London ICT kill zone — 2:00 AM to 5:00 AM. European desks come online and the first major repricing of the day happens. This window produces the daily high or the daily low more often than any other, and the moves are directional rather than rotational.

New York ICT kill zone — 7:00 AM to 10:00 AM. London is still open for its final hours while US desks arrive, so this is the deepest liquidity of the day. Scheduled US data lands at 8:30 AM, right in the middle.

London Close ICT kill zone — 10:00 AM to 12:00 PM. European desks unwind positions and the 4:00 PM London fix is struck at 11:00 AM New York time. Reversals and retracements of the day’s move are common.

If you want the ICT kill zones drawn automatically rather than eyeballed, most charting platforms handle session boxes natively — a clean TradingView guide will walk through setting the chart timezone correctly before you add anything else, which is the step that actually matters.

How Daylight Saving Breaks ICT Kill Zones Twice a Year

For about four weeks a year, any indicator that hard-codes ICT kill zones to GMT puts your windows an hour off. Almost nobody explains the arithmetic, so here it is.

New York and London normally sit five hours apart. But they do not switch to daylight saving on the same date. The United States springs forward on the second Sunday in March and falls back on the first Sunday in November. The United Kingdom switches on the last Sunday in March and the last Sunday in October. In 2026 that means the US moved on 8 March while the UK waited until 29 March, and in autumn the UK moves on 25 October while the US waits until 1 November. For those stretches your ICT kill zones drift against London’s own trading day.

During those gaps — 21 days in spring, 7 days in autumn — the two cities are four hours apart instead of five. The practical consequence is concrete. The London ICT kill zone at 2:00 AM to 5:00 AM New York time normally covers 7:00 AM to 10:00 AM London time, which is the hour before the London equity open through the two hours after it. During the desync it covers 6:00 AM to 9:00 AM London instead. You spend an extra hour watching pre-open illiquidity and lose an hour of the post-open expansion that the window exists to capture.

The fix is not to recalculate anything by hand. Set your chart timezone to New York and let the platform do the conversion, so all four ICT kill zones stay anchored where the framework defines them. If you are running a session-box script on MetaTrader rather than a web charting platform, check the offset field before you trust the boxes — the walkthrough on how to install custom indicators on MT5 covers where those settings live. The same caution applies to anything you leave running unattended: a pending order placed at the edge of a window you have mis-mapped will trigger in dead liquidity.

The Asian window matters less for what happens inside it than for what it leaves behind. This is the mechanical link between the four ICT kill zones, and it is the part that makes the whole framework cohere.

Because Asian hours are thin, price tends to compress into a defined range. That range has a high and a low, and both accumulate resting orders — stops from traders fading the range, breakout orders from traders anticipating the London move. By the time European desks arrive, there is a visible pool of liquidity sitting immediately above and below a narrow band.

 

London then trades into it. The characteristic sequence is a push through one side of the Asian range, a sweep of the orders resting there, and then a reversal in the opposite direction with real displacement behind it. Traders who mark the Asian high and low before the London ICT kill zone opens have a map of where the sweep is likely to occur. Those who do not are left interpreting the sweep as a genuine breakout and entering exactly where the flow is exiting. Measuring the retracement that follows against Fibonacci retracement levels gives you a framework for where the reversal leg is likely to find its entry, and if you work in supply-and-demand terms rather than ICT terms, the RTM trading strategy describes the same behaviour with a different vocabulary.

Why the London and New York ICT Kill Zones Behave Differently

Treating these two ICT kill zones as interchangeable is the most expensive mistake in the framework, because they have opposite structural jobs.

London is the initiation window. It is the first deep repricing after the Asian range, it is unencumbered by scheduled US data, and it sets the day’s directional bias. A move that begins in the London ICT kill zone frequently defines the daily high or low. That makes it the better window for trend entries, but also the window where the initial push is most likely to be a sweep before the real move.

New York is the confirmation-or-reversal window. By 7:00 AM the London move already exists, and US desks arrive with a view on it. They either extend it or fade it, and the 8:30 AM data release is often the trigger for which. This makes New York the higher-conviction window in one specific sense — you are trading with an established structure rather than guessing at one — and the more dangerous in another, because data-driven expansion can invalidate an otherwise clean setup in seconds. A confirmation candle such as an engulfing candle pattern carries more weight when it forms after the release than before it, and the support and resistance zones London established earlier are the levels the New York session will test. This is also why traders at any prop firm with a daily loss limit tend to favour one of the two ICT kill zones and learn it properly rather than trading both badly.

What ICT Kill Zones Are Not

The open window is not a setup. This is where most of the framework’s practical damage gets done, and it deserves stating flatly rather than diplomatically.

ICT kill zones tell you when conditions favour a decisive move. They do not tell you what that move will be, when inside the window it will happen, or whether it will happen at all. Plenty of London windows produce nothing but chop. Traders who treat the clock as permission end up taking marginal setups at 2:15 AM because the box on their chart turned green, which is a worse habit than having no session filter at all.

Concentration cuts both ways, too. The same depth that produces clean displacement also produces the most aggressive stop runs, because that is where the resting orders are. Spreads widen at session transitions and around scheduled releases, and slippage on stop fills is worst precisely when volume is highest. The window that gives you your best entries also gives you your worst fills. And a green box on the chart is a well-documented trigger for FOMO, because it manufactures a sense of a closing opportunity where none exists.

How to Trade Inside ICT Kill Zones Without Overtrading

Use ICT kill zones to decide when to look, never to decide whether to enter. Everything practical follows from that one rule.

Pick one window and learn its character before adding a second. The London and New York ICT kill zones are the usual starting points because they carry the most volume, but the right choice is whichever one you can consistently be awake and sharp for. A window you trade tired is worse than a window you skip.

Mark your levels before the window opens, not during it. The Asian range high and low, the prior day’s high and low, and any higher-timeframe zone you care about should already be on the chart when the box turns green. Decisions made inside a live window are worse than decisions made before it.

Cap your trades per window. Two setups inside a three-hour ICT kill zone is a reasonable ceiling for most traders, and the cap does more work than any entry model — it makes the fourth marginal idea structurally impossible rather than merely unwise. This is the same discipline that prevents revenge trading after a loss, and it fails for the same reason when it is a preference rather than a rule.

Require a structural reason, every time. A sweep of a known level, a break of structure, and an entry at a defined zone. Window open plus setup equals trade. Window open alone equals wait.

Matching Instruments to the Clock

The ICT kill zone and the instrument have to agree, because a currency is most active when its home desks are staffed.

Yen pairs move in the Asian ICT kill zone, when Tokyo is live. EUR, GBP and CHF crosses are most responsive in the London ICT kill zone. USD pairs and US indices belong to the New York window, and gold is at its most active during the London and New York overlap, when both of the two largest hubs are simultaneously open. Trading EUR/JPY in the Asian window because a box on your chart is green is a mismatch between the tool and the job.

Position sizing has to follow the same logic, because a pair’s average range is not constant across the day. A stop sized for London volatility is unnecessarily wide in the Asian window, and a stop sized for Asian conditions gets clipped instantly in New York. Running the numbers through a forex lot size calculator per session rather than once per strategy is the correction, and it takes about a minute.

What Session Timing Costs You in a Funded Account

In a personal account, a bad hour is a bad trade. In a funded account it is a withdrawal from a fixed budget that does not refill, which is why ICT kill zones stop being a preference and become a risk control.

PropLynq structures its Two-Step evaluation around a 5% daily loss limit and a 10% maximum drawdown. On a $100,000 account that is $5,000 available in a day and $10,000 across the account’s life. Risk a disciplined 1% — $1,000 — per trade, and the daily limit tolerates five losers before the day is over.

Now apply the clock to that budget. A trader watching the screen for twelve hours takes eight setups because eight presented themselves, and four of those are thin-liquidity trades outside any ICT kill zone that would never have qualified on structure alone. Four losers at 1% is $4,000 of a $5,000 daily allowance spent, most of it on trades the session filter would have removed before they were ever considered. The same trader restricted to two setups inside the London ICT kill zone risks $2,000 at absolute worst, and both trades had a structural reason behind them. The edge is not in the entries. It is in the trades that never happened.

The maximum drawdown makes the arithmetic harsher still, because it accumulates across days rather than resetting overnight — a distinction worth understanding properly through the difference between static vs trailing drawdown. Two disciplined ICT kill zones a day, twice a week, is a completely viable path through an evaluation. Twelve unfiltered hours a day is not, which is why session discipline sits near the top of any honest account of how to pass a prop firm challenge.

Turning the Clock Into a Filter

ICT kill zones work because turnover is concentrated in the hours when the largest desks on earth are staffed and repricing risk, and they fail when traders mistake that concentration for a signal. The framework gives you one thing and one thing only: a defensible answer to when you should be looking. What you do inside the window still has to come from structure.

Anchor your charts to New York time so the ICT kill zones stay where the framework defines them. Mark the Asian range before London opens. Pick one window, cap your trades inside it, and require a structural reason for every entry. Then close the platform when the window closes. The hours you do not trade are the ones that keep your risk budget intact for the hours you do.

If you want to apply session discipline against real capital with defined, transparent risk rules, you can get a funded account and trade these ICT kill zones inside a live evaluation.