The forex market runs 24 hours a day, 5 days a week — but it’s not equally active all the time. Trading sessions overlap, open, and close at specific times, creating predictable patterns of volatility and liquidity. Understanding sessions helps you choose when to trade based on your strategy, timezone, and risk tolerance.
Trading involves risk. Forex and CFD trading involves substantial risk of losing your capital. This glossary is for educational purposes only. Never trade money you cannot afford to lose.
Trading Session Terms
London Session (European Session)
The most active trading session, accounting for roughly 35% of daily forex volume. London opens at 8:00 AM GMT (3:00 AM EST) and closes at 5:00 PM GMT (12:00 PM EST). The first hour (London open) is the most volatile — major economic news from Europe hits during this time. Most binary options and forex strategies perform best during London session because of high liquidity and clear trends (optimize RSI divergence for London session →).
Example: EUR/USD and GBP/USD see their largest moves during London session (8 AM – 12 PM GMT). Average daily range is 80-120 pips during London vs 30-50 pips during Asian session.
New York Session (US Session)
The second-most active session, contributing about 17% of daily forex volume. New York opens at 1:00 PM GMT (8:00 AM EST) and closes at 10:00 PM GMT (5:00 PM EST). The overlap with London (1:00 PM – 5:00 PM GMT) is the most volatile period of the entire trading day — both sessions are open simultaneously. Key US economic data (NFP, CPI, FOMC) is released during this session (see which brokers handle US session volatility best →).
Example: NFP (Non-Farm Payroll) is released at 8:30 AM EST (1:30 PM GMT) — right in the London-New York overlap. EUR/USD can move 50+ pips in minutes during this release.
Asian Session (Tokyo Session)
The least volatile major session, contributing about 6% of daily forex volume. Tokyo opens at 12:00 AM GMT (7:00 PM EST) and closes at 9:00 AM GMT (4:00 AM EST). The Asian session is characterized by range-bound trading and lower volatility. JPY pairs (USD/JPY, EUR/JPY, GBP/JPY) are most active. Suitable for range-trading strategies but frustrating for breakout traders (adjust trendline strategies for Asian session →).
Example: USD/JPY during Asian session typically moves 20-40 pips in a range. Breakout traders wait for London open when volatility returns and the range breaks.
Session Overlap
The period when two trading sessions are open simultaneously, creating the highest volatility and liquidity of the day. Two major overlaps: London-New York (1:00 PM – 5:00 PM GMT) and London-Asia (8:00 AM – 9:00 AM GMT). The London-New York overlap is the most active trading window globally. Most professional traders base their schedules around session overlaps (compare spreads during session overlaps →).
Example: During London-New York overlap (1:00-5:00 PM GMT), spreads on EUR/USD can drop to 0.1-0.3 pips on ECN brokers. Volume is highest, execution is fastest.
Market Open
The first minutes of a trading session when liquidity returns and price gaps from the previous close may fill. Market opens often see sharp price movements as institutional orders hit the market. The first 30-60 minutes of each session typically have the highest volatility. Binary options traders love market opens for quick directional moves (see how MA crossovers behave at market open →).
Market Close
The final minutes of a session when traders close positions and liquidity decreases. Markets closing can see erratic price action as traders exit positions. The New York session close (5:00 PM EST) marks the end of the trading week on Fridays — many traders close positions to avoid weekend gap risk. The final hour of any session often has lower reliability for technical patterns (learn weekend gap risk →).
Weekend Gap
The price difference between Friday’s close and Sunday’s open in forex markets. Gaps occur when significant events (political news, economic data, natural disasters) happen while markets are closed. Unlike stock markets, forex gaps are usually small but can be significant. Some traders avoid holding positions over weekends. Binary options traders don’t need to worry about gaps since trades expire within their timeframe (gap risk management →).
Golden Hours
The period approximately 2-3 hours after a session opens when market conditions are optimal for trading. The “golden hours” theory states that the first hours of London session (8-11 AM GMT) and the London-New York overlap (1-3 PM GMT) offer the best trading conditions: clear trends, sufficient volatility, and tight spreads. Many professional traders only trade during these windows (see how S&R strategies perform during golden hours →).
Next Steps
Now that you understand trading sessions, here’s what to learn next:
Choose a Broker for Your Session → — Some brokers perform better during specific sessions.
Desktop vs Mobile Trading → — Which device works best for your trading session?
Forex Terminology → — Learn pip, lot, and spread basics before your first trade.
Trading involves substantial risk of losing your capital. This glossary is for educational purposes only. Past performance does not guarantee future results.
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