This financial astrology rule needs to be researched in different markets, if you find correlation of this turning points in other instruments, leve us a comment with your observations so we can confirm the significance of this rule. Thanks.
Note: The Mercury declination indicator is based on an ephemeris array that covers years 2010 to 2030, prior or after this years the declination is not available, this daily ephemeris are based on UTC time so in order to align properly with the price bars times you should set UTC as your chart reference timezone.
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.