12 Canal

12-Session Channels — Boxes with Right Extensions & Midline
This indicator plots up to 12 fully customizable intraday sessions. Each session is defined by three times (HHMM): Session Start, Session End, and Line End (how far the High/Low lines extend to the right). The session channel is drawn with two lines (high and low) plus a filled area between them; while the session is active, the channel adapts in real time to the running high/low. Once the session closes, the high/low lines are extended horizontally until the specified Line End time. An optional midline is included. Every session can use a distinct color for instant visual parsing.

Usage & benefits

Designed for intraday timeframes (< 1D).

Handles sessions that cross midnight (e.g., 21:00 → 01:00) with no time drift.

Option to use the chart’s symbol timezone (automatic DST) or a manual UTC± offset.

Filled area uses linefill (not box objects) to avoid vertical misalignment.

Historical display toggle to manage on-chart object count.

When to use

Partial opens, EU/US/Asia windows, news windows, lunch hours, pre-/post-market.

To frame tradable windows and project key levels forward to a precise cut-off time.

Tips

For equities pre-/post-market, enable Extended Hours on your chart.

Make sure your instrument actually prints bars during the configured window, otherwise no shapes will appear.

Reduce clutter by disabling history or running fewer sessions simultaneously.

Note

The indicator does not repaint: once a session ends, levels are fixed and extensions stop exactly at Line End.