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Born Near a Cusp?
A birthday near a sign boundary can raise a simple question: which sign was the Sun in?
A boundary between signs
In a chart, a cusp is a boundary. The term is also used for the starting edge of a house. Popular astrology uses “cusp birthday” for a date close to the Sun’s change of sign.
Why date tables differ
A calendar list rounds the change to a day. The actual ingress happens at a specific moment, which varies by year and time zone. For a birthday on that boundary, use the full birth details and an ephemeris or a chart calculation.
Reading both profiles
The old Starlight site explored cusp birthdays as a blend of neighboring themes. You can compare the two profiles as a reflection exercise. The precise Sun placement in a chart still falls on one side of the boundary.