Session First-Hour Close Levels Across Sydney, Tokyo, London, and New York

Summary

This chart indicator marks configurable Sydney, Tokyo, London, and New York trading windows. It draws each session’s high-low range and separately highlights its opening hour. Once that hour has elapsed, it plots a horizontal level at the prior bar’s close, which the script calls the session’s true close. Labels, session timing, time zone, colors, and a dashboard are configurable. The proposed interpretation is that the first hour of a session may capture delayed execution, rebalancing, or other flows that make its final price useful as a reference.

The document provides implementation details and a rationale, but no empirical test showing that the level predicts returns or reliably represents institutional activity. The session schedules are defaults and must be matched to the instrument, chart timeframe, and relevant daylight-saving conventions. The first-hour calculation also depends on bar indexing and timeframe behavior, so users should verify plotted levels on their charts before using them in a trading rule.

Key ideas

• The indicator tracks configurable ranges for four major market sessions.
• It highlights the opening hour and plots the preceding bar’s close after that hour completes.
• Session times and the chosen time zone can be adjusted to fit a chart and instrument.
• The claimed institutional meaning of the level is an interpretation, not a finding supported by presented performance data.

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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.