Previous Day & Premarket High/Low

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# Previous Day & Premarket High/Low Indicator

## Overview

This TradingView Pine Script indicator displays previous day's high/low levels and premarket high/low levels (HOD/LOD) directly on your chart. It helps traders identify key support and resistance levels from the previous trading day and track premarket price action.

## Features

### 📊 Previous Day Levels
- **Previous Day High (PDH)**: Shows the highest price from the previous trading day
- **Previous Day Low (PDL)**: Shows the lowest price from the previous trading day
- **Dynamic lines**: Automatically update each day with new previous day levels
- **Customizable colors**: Green for high, red for low (configurable)

### 🌅 Premarket Levels
- **Live Premarket HOD/LOD**: Real-time tracking of premarket high and low during premarket hours (4:00 AM - 9:30 AM)
- **Static Premarket Levels**: Frozen levels captured at 9:29 AM that persist throughout the trading day
- **Automatic session detection**: Identifies premarket vs regular trading hours
- **Time-based extension**: Lines extend to 4:00 PM end of trading day

## Time Sessions

### Premarket Session
- **Time**: 4:00 AM - 9:30 AM ET
- **Live tracking**: HOD/LOD update in real-time during premarket
- **Capture time**: Final values captured at 9:29 AM for static display

### Regular Trading Session
- **Time**: 9:30 AM - 4:00 PM ET
- **Static display**: Shows frozen premarket levels from 9:29 AM
- **Previous day levels**: Displays levels from the prior trading day

## Visual Elements

### Line Types
1. **Previous Day High**: Solid green line (customizable color)
2. **Previous Day Low**: Solid red line (customizable color)
3. **Live Premarket HOD**: Solid blue line (updates during premarket only)
4. **Live Premarket LOD**: Solid orange line (updates during premarket only)
5. **Static Premarket HOD**: Dashed blue line (frozen at 9:29 AM)
6. **Static Premarket LOD**: Dashed orange line (frozen at 9:29 AM)

### Labels
- **PDH/PDL**: Previous day high/low labels on the right side
- **PreMarket HOD/LOD**: Live premarket labels (during premarket hours)
- **Static Pre HOD/LOD**: Static premarket labels (after 9:29 AM)

## Input Settings

### Display Options
- **Show Previous Day High/Low**: Toggle previous day levels on/off
- **Show Premarket High/Low**: Toggle premarket levels on/off
- **Line Width**: Adjust thickness of all lines (1-5)

### Color Customization
- **Previous Day High Color**: Default green
- **Previous Day Low Color**: Default red
- **Premarket High Color**: Default blue
- **Premarket Low Color**: Default orange

昨天

版本注释

a

昨天

版本注释

Added alert options

14小时前

版本注释

Fix Previous day HL value.

13小时前

版本注释

Added opening range option and lines

13小时前

版本注释

Fixed lines labels

12小时前

版本注释

Update color