This Pine Script is an indicator designed to mark and highlight specific trading sessions on a TradingView chart. Here's a description of the script's functionality:

1. *Session Selection*: The script allows you to select a session time frame using the `session_input` input. The available options for session time frames are "D" (daily), "W" (weekly), "M" (monthly), "H" (hourly), "15" (15 minutes), "5" (5 minutes), and "1" (1 minute).

2. *Session Times*: You can specify the start and end times for three different trading sessions - CBDR (Central Bank Dealer Range), Asia, and London - using the corresponding input options. These times are specified in Indian Standard Time (IST).

3. *Time Calculation*: The script calculates the start and end times for each session based on the specified hours and minutes. It uses the `timestamp` function to create time objects for these sessions.

4. *Session Highlighting*: The script creates rectangles on the chart to highlight each session:
- CBDR Session: A gray rectangle is drawn during the CBDR session time.
- Asia Session: Another gray rectangle is drawn during the Asia session time.
- London Session: A green rectangle is drawn at the top of the chart during the London session time.

5. *Transparency*: The rectangles have a transparency level of 90%, allowing you to see the price data beneath them while still marking the sessions.

6. *Overlay*: The indicator is set to overlay on the price chart, so it doesn't obstruct the price data.

7. *Customization*: You can customize the session times and appearance by adjusting the input values in the settings panel of the indicator.

Overall, this script provides a visual way to identify and highlight specific trading sessions on your TradingView chart, helping traders understand price action in different market sessions.
Open-source script

In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.

Disclaimer

The information and publications are not meant to be, and do not constitute, financial, investment, trading, or other types of advice or recommendations supplied or endorsed by TradingView. Read more in the Terms of Use.

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