Session First 15-Min High/Low

Here's a professional description for your 15-minute indicator:

Session First 15-Min High/Low Marker

This indicator automatically identifies and marks the high and low price levels established during the first 15 minutes of major trading sessions, providing traders with broader opening range support and resistance zones for intraday analysis.

Key Features:

Tracks three major trading sessions in IST (Indian Standard Time):
Asian Session: 5:30 AM - 5:45 AM
London Session: 12:30 PM - 12:45 PM
New York Session: 5:30 PM - 5:45 PM
Draws horizontal lines at the highest and lowest prices reached during each session's opening 15-minute window
Color-coded for easy identification (Green for Asian, Blue for London, Red for New York)
Lines extend across the chart to help track price reactions throughout the day
Clean, minimal design with optional labels
Best Used For:

Identifying stronger intraday support and resistance levels with a wider opening range
Session breakout and reversal trading strategies
Understanding institutional order flow during market opens
Works on 1-minute timeframe for precise tracking (15 candles) or 5-minute timeframe (3 candles)
Why 15 Minutes vs 5 Minutes? The 15-minute opening range captures more price action and market participation, often providing more reliable support/resistance levels than the narrower 5-minute range. This makes it ideal for swing traders and those looking for higher-probability trade setups.

Customizable Settings:

Toggle line extensions on/off
Adjust line width (1-2)
Change colors for each session
Show/hide session labels
Perfect for day traders and position traders who want to identify high-probability support/resistance zones established during the critical opening 15 minutes of major trading sessions when liquidity and volatility are highest.

This description highlights the difference between the 5-minute and 15-minute versions and explains the practical benefits of the wider range.