London-New York Overlap Forex Trading Strategy in South Africa

updated september 2026

“EXPERIENCED TRADER”

Brian Rosemorgan

Retired Professional Trader | 8+ Years Experience | South Africa

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London-New York Forex Session Overlap: SAST Trading Times & Strategy

The London-New York overlap is one of the most closely watched periods in the forex market because two of the world’s major financial centres are active at the same time. For South African traders, however, there is an important extra consideration: the overlap does not stay at exactly the same SAST hours throughout the year.

South Africa remains on South African Standard Time (SAST) throughout the year and does not observe daylight saving time. London and New York do change their clocks, which means the local South African trading hours for their overlap can shift during the year.

This matters if you are building a daily trading routine. Being an hour early or late can mean missing the period you intended to trade. More importantly, higher liquidity and volatility do not automatically mean better trades. You still need a clear setup, sensible position sizing and strict risk management.

In this guide, I will explain the London-New York overlap in SAST, the currency pairs worth watching, how I would approach the session as a beginner, the common mistakes to avoid and a simple example of how a trader could prepare for a potential setup.

What Is the London-New York Forex Overlap?

The London-New York overlap is the period when the London and New York forex sessions are open simultaneously. Because traders, financial institutions and businesses in both major financial centres are active during the same period, market participation can increase across major currency pairs.

For retail traders, this can create more movement and potentially tighter spreads on highly traded currency pairs. But increased activity also means that price can move quickly, particularly around important economic announcements.

The important lesson is that liquidity is not the same thing as profitability. A busy market can provide opportunities, but it can also punish traders who enter without a plan.

1. Understanding London-New York Overlap Times in SAST

One of the biggest mistakes South African traders can make is assuming that the London-New York overlap is always 15:00 to 19:00 SAST. That is not correct throughout the year.

South Africa does not change its clocks, while the UK and the United States observe daylight saving time. The UK and US also change their clocks on different dates. This creates short transition periods when the South African time of the overlap needs special attention.

Practical tip: Before trading, check your broker’s displayed session times and the current London and New York clock settings rather than assuming yesterday’s SAST schedule will always remain the same.

2. Why the London-New York Overlap Can Be Attractive

The overlap brings together activity from two major financial centres. Major currency pairs can experience increased trading activity, and the greater participation can sometimes result in competitive spreads and faster price movement.

For a beginner, however, the attraction should not be “the market moves more, so I should trade more.” A better approach is to use the additional liquidity as a reason to watch the market for a quality setup.

The most important distinction is between market activity and trade opportunity. A candle moving 30 or 40 pips does not mean you should immediately enter it.

3. Which Forex Pairs Are Worth Watching?

During the London-New York overlap, I would generally concentrate on highly liquid major pairs rather than jumping between numerous markets.

• EUR/USD: One of the world’s most actively traded currency pairs and a natural pair to monitor during the overlap.
• GBP/USD: Particularly relevant while London is active and often watched for larger intraday moves.
• USD/JPY: A major USD pair that can respond to broader dollar sentiment and US economic developments.
• USD/ZAR: Especially relevant to South African traders, but its behaviour and spreads can differ from the major pairs. Do not assume it will behave like EUR/USD.

You do not need to trade all four. In fact, beginners may benefit from following only one or two pairs closely so they can learn how those markets normally behave.

4. Trading Major Pairs During Higher Volatility

Volatility can increase during the overlap, but volatility works both ways. It can create a useful move in your favour, but it can also hit a poorly positioned stop loss very quickly.

This is why I would avoid entering a trade simply because a large candle has appeared. Instead, look at the broader structure of the market. Identify important support and resistance levels, determine where your invalidation point would be and calculate your position size before entering

5. Should Beginners Trade the First 15 Minutes?

I would be cautious.

When a major session begins, price can move quickly as orders enter the market. A breakout can occur and then reverse just as quickly. Beginners often see the first large candle and feel that they have to get into the trade immediately.

You don’t.

One of the most useful lessons I learned during my years trading live markets was that missing a trade is better than forcing a bad trade.

Instead of trying to predict the first move, consider waiting for the initial volatility to settle and then look for confirmation around a level that you have already marked on your chart.

6. Build a Simple London-New York Trading Routine

A consistent routine can help prevent emotional decisions. You do not need to stare at your charts all day waiting for something to happen.

A simple routine could look like this:

1. Check the current London-New York overlap time in SAST.
2. Check the day’s major economic announcements before trading.
3. Open the one or two currency pairs you intend to follow.
4. Mark important support and resistance levels.
5. Identify the current market structure and direction.
6. Wait for your setup rather than trading simply because the session is busy.
7. Calculate your position size before entering.
8. Use a logical stop loss and predefined target.
9. Stop trading if your daily risk limit has been reached.

If there is no valid setup, doing nothing is a perfectly acceptable trading decision.

7. Simple London-New York Overlap Trading Example

Here is a hypothetical example of how a beginner could structure a trade idea. This is not a signal or a guarantee that the setup will work.

The important lesson is not the particular breakout strategy. It is the process: prepare, wait, confirm, calculate risk and then decide.

8. Managing Risk During the London-New York Overlap

High liquidity does not remove trading risk. In fact, rapid price movement can make poor risk management even more damaging.

I personally prefer the discipline of risking only a small percentage of the account on an individual trade. For beginners, the 1% risk rule is a useful framework to understand because a losing trade should not be allowed to seriously damage the account.

Never increase your lot size simply because the market appears to be moving strongly. Your position size should be determined by your account size, risk percentage and stop-loss distance.

9. Common London-New York Overlap Trading Mistakes

The overlap can look exciting on a chart, particularly when large candles start appearing. That is exactly why beginners need rules.

• Using the wrong SAST time: London and New York change their clocks while South Africa does not.
• Chasing large candles: A large move may already be underway by the time you enter.
• Oversizing positions: Higher volatility is not a reason to increase your risk.
• Ignoring economic news: Major announcements can cause sudden price movements and slippage.
• Trading too many pairs: Watching everything can make it harder to recognise a quality setup.
• Moving stop losses: Do not repeatedly widen your stop simply because price is moving against you.
• Overtrading: A four-hour overlap does not mean you need to take multiple trades.
• Skipping demo practice: Beginners should become familiar with fast-moving markets before risking real money.

10. London-New York Overlap: The Key Lesson for South African Traders

The London-New York overlap can be an interesting period for South African forex traders because of the amount of market activity taking place across major currency pairs.

But you should not trade the overlap simply because it is considered the busiest part of the forex day. Your goal should be to find a setup that matches your trading plan while keeping your risk under control.

For South African beginners, the most important lessons are simple: know the correct SAST hours, check economic news, focus on liquid pairs, wait for confirmation and protect your capital.

Remember that the best trading opportunity may sometimes be no trade at all.

Frequently Asked Questions

1. What time is the London-New York overlap in South Africa?

The London-New York overlap is generally around 15:00–19:00 SAST when London and New York are both on their standard-time schedules. When both are observing daylight saving time, the overlap is approximately 14:00–18:00 SAST. Because the UK and US change their clocks on different dates, there are short transition periods when South African traders need to pay particular attention to the current session times.

2. Why is the London-New York overlap important for forex traders?

The overlap brings together activity from two major financial centres. This can increase trading activity and liquidity in major currency pairs. However, increased market activity does not guarantee profitable trades, and volatility can increase risk as well as opportunity.

3. What is the best time to trade the London-New York overlap in South Africa?

There is no single hour that is best for every trader or strategy. Many traders watch the overlap because of increased activity, but your own trading plan should determine when you enter. Always account for seasonal clock changes when converting London and New York hours to SAST.

4. Which currency pairs should South African traders watch?

Major pairs such as EUR/USD, GBP/USD and USD/JPY are commonly watched during the overlap because of their high levels of global trading activity. South African traders may also monitor USD/ZAR, but its behaviour, liquidity and spread conditions can differ from major pairs.

5. Is the London-New York overlap good for beginners?

It can be useful for learning because there is often plenty of market activity to study, but beginners should not assume that more movement means easier trading. The faster price action can also make mistakes more expensive. Practise on a demo account first and develop a clear risk-management plan.

6. How does daylight saving time affect SAST trading hours?

South Africa does not observe daylight saving time, while the UK and most of the US do. Because their clock-change dates are different, the London-New York overlap can shift on the South African clock at different times of the year. In 2026, the US changes its clocks on March 8 and November 1, while the UK changes on March 29 and October 25.

7. Should I trade during the first 15 minutes of the overlap?

Beginners may benefit from waiting rather than immediately trading the first large move. The opening part of a busy session can produce rapid price movements and false breakouts. Waiting for your predefined confirmation can help reduce impulsive entries.

8. What role does risk management play during the overlap?

Risk management is essential because higher volatility can cause positions to move quickly. Decide your maximum risk before entering, calculate your position size and use a logical stop-loss level. Never increase your risk simply because the market is moving faster.

9. How does the London-New York overlap affect USD/ZAR?

USD/ZAR can respond to broad US dollar sentiment and global risk conditions during the New York session, while South African economic developments can also have a significant influence. Traders should therefore consider both international and South African market factors rather than assuming USD/ZAR will follow EUR/USD or GBP/USD.

10. Can I practise the London-New York overlap strategy on a demo account?

Yes. Demo trading allows beginners to practise reading price action during the relevant SAST hours without risking real money. I strongly recommend using a demo account while learning how your strategy behaves during higher-volatility sessions.

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