Seems that Mercury in extreme declinations above or below 21 tends to produce trend turning points. When the points where the declination reverse from maximum or minimum value are observed, could be noted that in BTCUSD it correlates quite close with trend turning points.
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.