Because crypto never closes, traders assume it has no rhythm. In practice the handover between Asian, European and US liquidity produces recognisable intraday behaviour, and Comex metals inherit a similar cadence around key session opens.
Anchoring every window to a single reference time zone removes most of the confusion. A cycle window that drifts with your clock is not a window.
What to watch
Compression into a window is more informative than a large candle inside it. Quiet ranges immediately before a window frequently precede the cleaner move.