Sessionvolatilityheatmap - MetaTrader 5 için gösterge

Session Volatility Heatmap

The idea behind it

Most traders know the textbook version of session times, but every symbol has its own real rhythm — the hour it actually wakes up is not always the hour the session guide says it should. This indicator replaces the guess with a measurement: it pulls InpLookbackDays of history on the chart's own timeframe, buckets every bar's (high − low) range by the hour it closed in, and averages each of the 24 hourly buckets. The result is drawn as a small heatmap panel, and the same three major sessions are shaded directly behind the candles so the two views line up at a glance.

How to interpret it

• The heatmap bars — each of the 24 columns is one hour of the broker/server day. Taller, warmer-coloured columns are hours where this specific symbol has historically moved more; short, cool-coloured columns are quiet hours. Because it is computed from your own history, it reflects this symbol and this broker's server time, not a generic session chart.
• The session bands — the pale shaded rectangles behind price mark the Asian, London, and New York windows for each of the last InpSessionDays days. Where two bands overlap, you are looking at the highest-liquidity part of the day; comparing that visually against the heatmap panel usually confirms it is also where the tallest bars are.
• Reading the two together — the heatmap tells you which hour, the session bands tell you why. If the tallest bar in the heatmap does not line up with a session overlap on your instrument, that is often worth knowing on its own — it usually means a scheduled release (open, fix, or a recurring data print) rather than session flow is driving that hour.

This is a measurement tool, not a signal generator. It does not suggest entries or exits — it only shows you where the historical volatility and liquidity actually sit, so decisions about when to trade (or when to sit out) are made from what is measured rather than assumed.

External variables (inputs)

Recommended use

Every broker's server clock is set differently relative to UTC, so check what your broker's server time actually is before trusting the default session hours — they are typical starting points, not universal constants. Once the three ranges are set correctly for your broker, the panel and the shading stay accurate on their own; there is nothing else to maintain.

Fig. 1. The hourly volatility heatmap panel alongside session-shaded candles. Rendered in black and white per the Code Base image guidelines.