Multi-Session Futures Range Boxes(NY, Europe, & Asia)

Multi-Session Boxes — ASIA / EUROPE / NEW YORK

This indicator draws session boxes for three custom trading sessions and updates them live on intraday charts.
Each box tracks the high, low, and open of its session; the box color switches Up/Down based on whether the current price is above or below the session open.

Default setup
• ASIA — 20:00–02:59 (ET), Purple (bg/border), opacity 90
• EUROPE — 03:00–09:29 (ET), Turquoise (bg/border), opacity 90
• NEW YORK — 09:30–16:00 (ET), Yellow (bg/border), opacity 90

You can change times, time zones (IANA names like America/New_York, UTC, Europe/London), colors, opacity, and border width per session from the settings. Each session also has an Enable toggle.

How it works
• At each session’s first bar, the indicator records the open and initializes high/low.
• During the session, it updates the highest high / lowest low and stretches the box to the current bar.
• Box background & border use your Up/Down colors:
◦ Up if close > session open
◦ Down otherwise
• Works on intraday timeframes only (as with the original script).

Notes for futures
• The box schedule is based on your selected time zone.
• If you keep ASIA at 20:00, the gap between 16:00–20:00 ET (post-RTH / Globex evening) is intentionally unboxed so Asia’s H/L aren’t polluted by thin trade.
• If you prefer to fill that gap visually, you can add a separate “Evening” session later without changing Asia’s times.