Direct answer
Yes—forex “hours” can appear to change during daylight saving time (DST). This usually happens because the clock time shown by a broker, data feed, or chart is converted into a local timezone that changes when DST starts or ends. The underlying idea of forex trading still relies on global market overlap across major regions, so liquidity generally remains tied to those regions rather than a single fixed clock.
How it works
Forex is often described as operating “24 hours,” but in practice it runs as a continuous market with changing liquidity across regions (for example, when trading activity is higher in one region and lower in another). When DST begins or ends, the offset between your timezone and one or more market regions changes by one hour.
What you may see as “changed forex hours” typically comes from at least one of these:
- Platform timezone settings: Many charts and session indicators display times in a user-selected timezone (often the broker’s server timezone or your local timezone). If DST changes that offset, session labels shift.
- Session indicator rules: Some tools mark London/NY “sessions” based on clock times. If those are defined relative to a specific timezone, they can move by one hour when DST changes.
- Data source conventions: Candles and session lines depend on timestamp interpretation. If the feed is normalized differently, visual session boundaries can shift even though the market remains active.
Within a “change of character” style of market-structure thinking, the key point is to avoid treating session clock changes as an automatic price pattern. Liquidity and participation can vary around session transitions, but price behavior still depends on broader conditions, not only on DST.
Example checks
- Compare session labels (e.g., “London open” and “New York open”) before and after DST changes. If only the displayed times move by one hour, it suggests a timezone conversion effect.
- Confirm the timezone used by your platform (broker server time vs your local time). If your settings don’t change but the labels do, the platform is likely applying DST rules.
- If you use charts that can show server time vs local time, toggle between them. If “forex hours” look different across toggles, you are seeing clock conversion, not a change in market availability.
Limitations
There is no single universal set of forex opening and closing hours because the market is global and the “hours” you see often depend on how a provider defines sessions and which timezone it uses. Without knowing your broker’s server timezone rules and your chart’s timezone settings, you can’t reliably infer one consistent DST-adjusted schedule.
Also, DST-related clock shifts do not guarantee any future price outcome. Treat any apparent session-timing changes as a display/interpretation issue unless you verify the timezone basis and charting rules.