Prev Day High/Low - RTH Only

This indicator displays the previous day’s Regular Trading Hours (RTH) high and low levels on your chart, but only during the next day’s RTH session — keeping your charts clean while highlighting the most relevant price zones.

🔧 Features:
RTH Timing: 09:30 to 16:00 (New York time)

Auto-Detection: Automatically tracks the high and low of each RTH session

Next-Day Visibility: Lines are only shown during the following day’s RTH session

Minimal Chart Clutter: Levels disappear after the session ends, keeping focus on what's relevant

Clear Labels: Optional “Prev High” and “Prev Low” markers at market open

📊 Use Case:
Perfect for intraday and 0DTE options traders who rely on prior session key levels for:

Breakout trades

Reversal setups

Support/resistance confluence

These levels are often respected by institutions and algo flows, making them highly actionable when approached in the next RTH session.

🧠 Why This Matters:
Many traders overpopulate their charts with persistent support/resistance lines. This script keeps only what’s essential — the previous day’s RTH range — and only when it matters most: the following day’s active market hours.