Sun Sign Calculator — Your Sun Sign (Tropical)

Your sun sign is the tropical zodiac sign the Sun occupied when you were born — the sign most people know from newspaper and magazine horoscopes. The Sun takes about a month to cross each sign, so everyone born in roughly the same month shares a sun sign, and it needs no birth time or place to compute.

Because the two systems measure the zodiac from different starting points. This tool uses the tropical zodiac, with signs measured from the equinoxes; Vedic astrology uses the sidereal zodiac, measured against the fixed stars with the Lahiri ayanamsa. The two are offset by roughly 24 degrees, so a tropical sun sign can differ from the kundali's Surya placement by about a sign — a tropical Gemini Sun is usually a sidereal Taurus Sun.

Because the sun sign is the one placement every reader can know for certain: it depends only on the date of birth, not the time or place, and it changes about once a month. The price of that universality is generality — a sun-sign column addresses a twelfth of the population at once, which is why it reads broad rather than personal.

Almost never. The Sun moves about one degree per day and takes roughly 30 days to cross a sign, so everyone born within the same month shares the same sun sign regardless of time or place. Only births within a day or two of a sign's boundary need the exact time to pin down which side of the boundary the Sun was on.

Vedic astrology leads with the Moon sign (rashi) and the lagna (ascendant), not the Sun — the Moon sign is what most Indian astrologers name when asked for your sign. The Sun (Surya) is still one of the nine grahas, with its own placements and dasha periods, but it is not the first sign a Vedic reading starts from, which is one more reason your Western sun sign can differ from how a Vedic reading describes you.

No. It shows only the Sun's placement: sign, exact degree and house in the tropical whole-sign chart, plus a retrograde flag (which the Sun can never genuinely show from Earth). Aspects, Placidus houses and Uranus, Neptune and Pluto are not computed here — the full traditional chart, with the seven classical planets, the four angles and every judgement cited to its classical source, is the Birth Chart Calculator.