Begin with the Sun, Moon and angles
The Sun describes the relationship’s organizing purpose; the Moon shows its emotional climate. The Ascendant describes how the bond meets life, while the Midheaven points to its visible direction.
Davison Relationship Chart
Davison Relationship Chart Calculator
Give the relationship a birth chart of its own.
Davison takes the midpoint between two real birth moments and locations. The result is one dated, located chart for the relationship itself.
Standard time–space midpoint · UTC-first calculation
Davison Relationship Chart
Davison Relationship Chart
Davison takes the midpoint between two real birth moments and locations. The result is one dated, located chart for the relationship itself.
1
Chart A
Person A
:
Choose a city from the suggestions for coordinates.
×
2
Chart B
Person B
:
Choose a city from the suggestions for coordinates.
Exact birth time requiredDavison houses and angles depend on both birth times. Use the recorded local time for each person.
3
House system
House system
Affects houses, angles, overlays, and house-based readings.
Standard time–space midpoint · UTC-first calculation
How this chart is built
1
Resolve both moments
Each local birth time is converted to its historical UTC moment.
2
Find the midpoint
The exact midpoint in time and the midpoint between both coordinates are calculated.
3
Cast one real chart
That derived moment and place are read like an event chart, with its own planets, houses, and aspects.
Davison vs composite
A midpoint composite averages each pair of planetary positions. Davison averages the two birth moments and places first, then calculates the sky for that real derived moment. They answer a similar relationship question through different mathematics.
How to read a Davison relationship chart
Read the chart as the relationship’s shared field, not as a third person and not as a compatibility score. Start with the chart’s structure, then move from the most personal placements to the tightest aspects.
Use houses to locate the experience
A planet’s house shows where that part of the relationship repeatedly asks for attention. Angular houses are especially time-sensitive, so both recorded birth times matter.
Read the tightest aspects first
Close conjunctions, oppositions, squares, trines and sextiles form the chart’s clearest internal dynamics. Add Chiron, the Nodes and Lilith after the planetary pattern is understood.
Add timing only after the natal pattern
Because a Davison chart has a derived date, time and place, astrologers often apply transits and secondary progressions to it. Treat them as relationship-cycle context rather than a guarantee of events.
A practical reading order
Sun and Moon → Ascendant and chart ruler → Venus and Mars → angular houses → tight major aspects → Nodes, Chiron and Lilith → current transits or progressions.
Davison chart vs midpoint composite
Both describe the relationship as a whole, but they are calculated differently and should not be treated as interchangeable charts.
| Feature | Davison chart | Midpoint composite |
|---|---|---|
| Calculation | Averages the two birth moments and locations, then casts one chart. | Averages each matching pair of planetary longitudes. |
| Real derived date and place | Yes | No |
| Houses and angles | Calculated from the midpoint moment and location; exact times matter. | Depend on the chosen composite method and reference location. |
| Best first use | Shared development, lived context and relationship timing. | The bond’s internal pattern, tone and shared style. |
Davison chart questions
What is a Davison relationship chart?
It is a relationship chart cast for the midpoint between two exact birth moments and locations. Unlike a midpoint composite, it has a real derived date, time, and place.
Is Davison the same as a composite chart?
No. Composite charts average planetary positions. Davison charts average time and space, then calculate one chart for that derived moment.
Do both birth times need to be exact?
Yes. Inaccurate birth times shift the midpoint and can change the Ascendant, Midheaven, houses, Moon degree, and time-sensitive aspects.