The Four Royal Stars also called Archangel Stars are; Aldebaran (Michael), Regulus (Raphael), Antares (Uriel), and Fomalhaut (Gabriel). They are the brightest stars in their constellations and are considered the four guardians of the heavens. They mark seasonal changes of the year at the equinoxes and solstices. Aldebaran watches the Eastern sky and is the dominant star in the Taurus constellation. Regulus watches the North and is the dominant star in the Leo constellation. Antares watches the West and is the alpha star in Scorpio. Fomalhaut watches the Southern sky as the brightest star in Piscis Austrinus. 
Cosmic Time Cycle
The East-West Axis of Aldebaran (Taurus) and Antares (Scorpio) as a pair, form the demarcation points of East and West that make the circuit through the Precession of the Equinoxes. This point is measured through the alignments made between these two stars and the Sun's path, at their axis of rotation made around the Galactic Center. When these two stars are paired in the rotational measurement of equal axis alignment, this event marks the opening of the cosmic time cycle. When The Golden Gate activated recently, this reversed the positional movement of the East –West axis as per directed in the Divine Infinite Calculus. This is saying that these stars have changed their positions in the Galaxy from their previous time cycle, from the perspective of Cosmic Time. These stars form the Four Cardinal Directions (N-S-E-W) measured in the Cosmic Time Cycle, which are being adjusted to the Cosmic Compass designed by Divine Infinite Calculus. The new celestial direction in the cosmic time cycle form the Crown of the Magi, which is a type of Cosmic Celestial Time Calendar that opens Infinity. This is why they are referred to as the Four Royal Stars. At the end of the Precession of Equinoxes, they adjust position and form the Crown of the Magi. Those that wear this Celestial Crown are able to contact infinity, however, they must be embodied Christ Consciousness. 
The Four Royal Stars have assigned numbers that are are the Royal Star numbers in Chaldean Numerology. In numerology there are certain numbers which are called as Royal Stars. Their numerology from ancient Persian Astrologers is the numbers 23, 37, 51 and 65. The number 23 is assigned to Regulus in Leo for the Royal Star of the Lion. The number 37 is assigned to Aldebaran for Taurus the Bull for the Royal Star of the Bull. The number 51 is the Royal Star of Man and is assigned to Fomalhaut through Aquarius. The number 65 is called Royal Star of the Earth assigned to Antares in Scorpius.