Gold range scalping is reliably tradeable only in the 23:00–07:00 UTC Asian session and the 11:00–12:30 UTC London lunch lull, where spread stays near $0.15–$0.30 against a $6–$12 target. London expansion, the New York open, US data windows and rollover all widen spread or add directional flow, which erases the edge before the chart pattern is even considered.
Gold range scalping only works in specific UTC windows: the 23:00–07:00 UTC Asian session, particularly its 01:00–06:00 UTC core, and the 11:00–12:30 UTC London lunch lull, where spread stays tight relative to a confirmed boundary and large directional flow is largely absent.
Rollover (21:00–23:00 UTC), London expansion (07:00–10:00 UTC) and the New York/US data window (13:00–16:00 UTC) are unprofitable for range scalping by construction — either the spread itself exceeds the target or genuine flow breaks the boundary the strategy depends on holding.
Day-of-week effects are real but secondary to the hour: Monday Asian sessions carry weekend-gap noise, Wednesday tends to be the cleanest, and Friday afternoon can thin out early but also produce erratic low-volume spikes. UTC-based session tables should be re-verified in the weeks around UK and US daylight-saving transitions.
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