Can I mean revert gold at the London open?

No. 07:00 to 09:00 UTC is the primary expansion window on XAUUSD, so fading moves there means trading directly against the session most likely to trend.

How do I know if today is a rotational day for gold?

Check whether price is crossing VWAP repeatedly, whether the prior day range is still intact, whether the dollar is directionless, and whether the day's travel is under about 1.2 times the 14-day ATR by midday.

Best Sessions for Gold Mean Reversion (UTC)

Q: When is gold most likely to mean revert?

During the London midday drift (10:00 to 12:15 UTC) and the New York afternoon (15:30 to 19:00 UTC) on days with no tier-one US data release.

XAU mean reversion works best during the London midday drift (10:00 to 12:15 UTC) and the New York afternoon (15:30 to 19:00 UTC), and should be avoided in the 07:00 to 09:00 UTC London expansion window.

A quiet economic calendar is the strongest single predictor of a rotational gold day, while release days trend and the 21:00 to 23:00 UTC rollover produces spread-driven false signals.

If gold has travelled more than about 1.2 times its 14-day ATR by midday, the session should be classified as a trend day and reversion switched off.