All input input hours are in Eastern time (ET)
Purple lines indicates the start of the Asia session
Blue lines indicates the start of the London session
Green lines indicates the start of the US session
All dotted lines indicate the end of the respective session and the session gaps are between the dotted lines and the next session start.
I have also added a Lines that shows the start of the day candle. This is the black dashed line.
Hope this helps everyone in their journey. Stay profitable!
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.