The forex market runs 24 hours a day, five days a week, moving through four major regional trading sessions as different financial centres open and close. Understanding when these sessions overlap — and when they don’t — is one of the simplest ways to improve trade timing without changing your strategy at all.
The four major sessions (IST)
Sydney: 3:30 AM – 12:30 PM IST | Tokyo: 5:30 AM – 2:30 PM IST | London: 1:30 PM – 10:30 PM IST | New York: 6:30 PM – 3:30 AM IST
Why session overlaps matter more than session hours alone
Liquidity and volatility both rise sharply when two major sessions are open simultaneously, because more institutional participants are active in the market at once. Spreads tend to tighten and price moves become more reliable during these windows; outside them, thin liquidity can produce erratic, low-conviction price action that’s harder to trade profitably.
- London–New York overlap (6:30 PM – 10:30 PM IST): the single busiest window in the entire forex day, covering the two largest financial centres. Generally the best window for EUR/USD, GBP/USD, and most major-pair strategies.
- Sydney–Tokyo overlap (roughly 5:30 AM – 12:30 PM IST): the best conditions specifically for AUD and NZD pairs, where Asia-Pacific liquidity concentrates.
- London session alone (1:30 PM – 10:30 PM IST / 8 AM – 5 PM GMT): still strong on its own for GBP and EUR pairs even outside the New York overlap, since London handles the largest share of daily FX turnover of any single trading centre.
Practical takeaways by trader type
- If you trade majors (EUR/USD, GBP/USD, USD/JPY): prioritise the London–New York overlap.
- If you trade AUD/NZD pairs: the Sydney–Tokyo overlap is your best liquidity window.
- If you can only trade a few hours a day: pick the session overlap that matches the pairs you already trade, rather than forcing a schedule around low-liquidity hours — the same setup performs differently depending on how much real volume is behind it.
The forex market’s round-the-clock nature is an advantage, but only if you trade when genuine liquidity is present — not simply whenever the market happens to be open.