Your Sun sign

The Sun sign you were born under — a mirror of temperament, not a fate.

How is Western astrology calculated?

← Back to Bokki

How this Sun, Moon, and rising reading is calculated

Your Western tropical Sun sign always; your Moon sign and rising sign (ascendant) too, once you give a birth time — the rising sign needs a birthplace as well.

Sun sign comes from a fixed month/day boundary table, with an honest cusp flag when your birthday falls within about a day of a boundary. Moon sign is read from real ephemeris data, since the Moon moves roughly 13° a day and needs your exact birth time. Rising sign is computed from local sidereal time and the true obliquity of the date at your birthplace.

This is the tropical zodiac — 30° arcs measured from the equinox, not the sidereal system Vedic astrology uses (see /vedic). We don't build a full 12-house chart, and standard time is assumed rather than adjusted for daylight saving.

How this Sun, Moon, and rising reading is calculated

Why do I need a birth time for my Moon and rising sign?

The Moon moves about 13° a day, crossing into a new sign roughly every two and a half days, and the rising sign changes about every two hours — without a real birth time, either could land in the wrong sign.

Is this the same zodiac Vedic astrology uses?

No. This is the Western tropical zodiac, measured in 30° arcs from the equinox. Vedic (Jyotish) astrology is sidereal, measured against the fixed stars — the two systems can place the same birth in different signs.