Free Self-Discovery Tool
Free Davison chart calculator: the relationship’s birth chart cast for the midpoint in time and space between two births, with Sun, Moon, Rising, houses, aspects, and the next transits to its Sun.
The Davison Sun is what the relationship is for; the Moon is how it feels from the inside; the Rising is how it comes across to everyone else. Then look at where the relationship’s Sun falls in each of your natal charts: in your 5th it is a romance, in your 10th it changes your public life, in your 12th it is private and hard to explain. The calculator computes all of it from the midpoint moment and reads the tightest aspects, which are the relationship’s reflexes under pressure.
Saturn reaching the Davison Sun is the relationship’s test and commitment; Jupiter reaching it is its growth. Because the chart is a real moment these are exact dates, solved from the ephemeris for the next two years, including retrograde passes. When each one lands on both of you at once, and which is the audit and which the commitment, is written in the reading that follows.
A chart cast for the midpoint in time between two people’s births, at the midpoint in space between their birthplaces. It is a real moment in a real place, so it has an Ascendant, houses and dates, and transits can be run to it. Astrologers read it as the relationship’s own nature, separate from either person.
A composite chart averages each pair of planets, so its Sun is the midpoint of your two Suns and it never existed in the sky. A Davison chart is cast for a real date and place, so its planets are where they really were, and it can be progressed and transited. Many astrologers use both.
The average of the two latitudes and the average of the two longitudes, taken the short way around the globe. It can land in the sea; the chart does not mind. The calculator shows the coordinates it used.
For the relationship’s Rising sign and houses, yes, since the midpoint moment depends on both. With a time missing the calculator still casts the planets by sign and degree and says the houses are unavailable.
Because the Davison chart is a real moment, the planets in the sky today make exact aspects to it, and those land on the relationship rather than on either person. The calculator dates Saturn and Jupiter reaching the relationship’s Sun over the next two years.