Sessions, Killzones & HTF Levels

Sessions, Killzones & HTF Levels

Overview

All-in-one ICT-style session and levels indicator for futures and forex. Highlights trading sessions and killzones as background colors, tracks session highs/lows with dotted reference lines, and draws previous period high/low levels for daily, weekly, and hourly
timeframes.

Features

Trading Sessions (Asia, London, NY)
- Background color highlighting during each session window (no chart distortion)
- Distinct colors per session: Asia (purple), London (blue), NY (orange)
- Developing session high/low tracked in real-time with dotted lines and labels
- Lines extend a configurable number of bars after session close (default 15)
- All session times configurable in Eastern Time (DST-aware)

ICT Killzones (5 zones)
- Asian KZ (20:00-00:00), London KZ (02:00-05:00), NY AM (08:30-11:00), NY Lunch (11:00-13:00), NY PM (13:00-16:00)
- Ultra-light background highlighting that doesn't interfere with price action
- Each killzone independently toggleable — NY Lunch off by default
- All times configurable in ET

Previous Period High/Low Levels
- Previous Daily High/Low, Previous Weekly High/Low, Previous Hourly High/Low
- Drawn as dotted lines extending a configurable number of bars (default 15)
- Only shows fully closed period data — no developing/unconfirmed levels
- Auto-hides when chart timeframe exceeds the level's timeframe (e.g., daily levels hidden on weekly charts)
- Labeled: "Prev Daily High", "Prev Daily Low", "Prev Weekly High", etc.

Smart Defaults
- Configurable lookback window limits historical drawings to conserve TradingView object limits
- Timezone selector: Eastern Time (default), Central, or UTC
- All colors, transparency levels, and visibility toggles are fully configurable
- Inputs organized into logical groups: Sessions, Killzones, HTF Levels, General

Inputs

Sessions: Show/hide per session, session time windows, colors, box transparency (92%), H/L line transparency (40%), H/L extension bars (15)

Killzones: Show/hide per killzone, time windows, colors, box transparency (95%)

HTF Levels: Show/hide per level pair (Daily, Weekly, Hourly), colors per pair, line transparency (20%), extension bars (15)

General: Max days back (5), timezone selector

How It Works

Sessions are detected using PineScript's time() function with configurable session strings in the selected timezone. When a session is active, the chart background is tinted with the session's color. Session highs and lows are tracked bar-by-bar during the session, then
frozen and extended as dotted reference lines after the session closes.

Killzones use the same background highlighting approach. They are purely time-based windows with no H/L tracking — designed to show you when the high-probability trading windows are active.

HTF Levels use request.security() to fetch the previous completed candle's high and low from daily, weekly, and hourly timeframes. The indicator uses barmerge.lookahead_off to guarantee that only fully closed candle data is displayed — you will never see levels from a
developing/unconfirmed period. Levels are automatically hidden when the chart timeframe is equal to or higher than the level's timeframe.

Usage Tips

- Use session backgrounds to quickly identify which session you're trading in
- Session H/L lines serve as intraday support/resistance levels
- Killzone backgrounds highlight the highest-probability windows for ICT setups
- Previous Daily and Weekly highs/lows are key liquidity levels — watch for sweeps
- Combine with the FVG and Order Flow indicators for a complete ICT toolkit
- Increase "Max days back" if you want more historical session drawings (watch the 500 object limit)

Session Times (defaults, all ET)
┌─────────────┬───────┬───────┐
│ Session/KZ │ Start │ End │
├─────────────┼───────┼───────┤
│ Asia │ 20:00 │ 00:00 │
├─────────────┼───────┼───────┤
│ London │ 02:00 │ 05:00 │
├─────────────┼───────┼───────┤
│ NY │ 09:30 │ 12:00 │
├─────────────┼───────┼───────┤
│ Asian KZ │ 20:00 │ 00:00 │
├─────────────┼───────┼───────┤
│ London KZ │ 02:00 │ 05:00 │
├─────────────┼───────┼───────┤
│ NY AM KZ │ 08:30 │ 11:00 │
├─────────────┼───────┼───────┤
│ NY Lunch KZ │ 11:00 │ 13:00 │
├─────────────┼───────┼───────┤
│ NY PM KZ │ 13:00 │ 16:00 │
└─────────────┴───────┴───────┘