Sun opposite Moon places Sun and Moon about 180° apart in zodiac longitude.
The central pattern
A Sun–Moon opposition places the luminaries across the chart, close to the full-moon phase. Interpretation often starts with the contrast between a chosen direction and the response that appears when another demand or person is present. The distance can provide perspective: one part of life is easier to see from the other side. It does not mean a person is divided beyond repair.
How it may show up
Ordinary life may involve alternating focus between work and home, independence and belonging, or two other domains indicated by the houses. The task is to develop a rhythm rather than force a permanent winner. A decision can be checked from both viewpoints. Once both have been heard, movement becomes possible without requiring perfect agreement.
In relationships and choices
Because oppositions are easily projected, another person may seem to carry the quality the chart owner temporarily disowns. A partner can mirror a need, but is not obliged to perform it. Notice the difference between a real disagreement and a symbol imposed on someone else. A fair exchange gives each side its own voice.
Read it in the whole chart
Confirm the actual orb and lunar phase. Examine the signs, houses, their rulers, and any planet making a square to both luminaries; a larger pattern can change the emphasis. A reliable birth time is needed for house claims and for precise Moon longitude. Do not turn a geometric opposition into a prediction about relationship outcomes.
What becomes visible when you listen to both sides of a choice?
Orb and birth time
The opposite is an ideal angle of 180°. A chart's printed aspect may be several degrees from exact; this difference is its orb. There is no single universal orb cutoff. Compare the actual separation, sign and house positions, applying or separating motion, and the rest of the aspect pattern before prioritizing this interpretation. A birth chart calculator provides the geometry; interpretation also depends on the rest of the chart.
House positions depend on birth time. The Moon also moves quickly enough that a missing or rounded birth hour can change the measured orb.