Natal Chart
Sun Sign
Definition
The zodiac sign the Sun occupied at the moment of birth. It is the placement most horoscopes are talking about, and it describes a person's core identity: the basic character they're working with, not a full picture of them.
What it means
The Sun moves through one sign roughly every 30 days, spending about a month in each of the 12 signs as it completes a full zodiac cycle over a year. In a natal chart, its sign describes the central thread of someone's identity: the qualities that tend to show up across a lifetime rather than shifting with mood or circumstance. A Leo Sun and a Capricorn Sun are working from different core material, even if a great deal of the rest of their charts overlaps.
How it shows up in a chart
The Sun's sign sits alongside its house placement (which life area it colors most) and any aspects it forms to other planets (which soften, sharpen, or complicate its expression). A Sun in a fire sign like Aries reads differently depending on whether it lands in the 1st house of self-presentation or the 10th house of career and public role. Sign is the flavor; house and aspect are where and how that flavor plays out.
A worked example
4 AUGUST 1961 · 19:24 · HONOLULU Barack Obama's Sun sits at 12°33′ Leo in the 6th house. Leo's themes center on visibility, creative self-expression, and leadership drawn from a strong personal center; the 6th house colors that toward daily work, service, and the systems someone builds routines around. Read together, the placement describes a core identity oriented around leading through consistent, visible effort rather than through spontaneous display.
Where this term appears