CalcKitVedic Birth Chart Calculator
Your birth details
Your birthplace is not in the list? Choose “Add your own place” and type its name, latitude, longitude and UTC offset below.
Entertainment and astrology — Vedic astrology is a traditional system, not a scientific measurement. The Sun, Moon and Rising signs below are estimates from simplified astronomy, and the Rising sign needs an exact birth time and place.
The Moon and Rising signs are estimates from simplified astronomy. The Rising sign is sensitive to birth time: a few minutes can change it near a sign boundary.
Example: born 15 June 1990 at 10:30 AM in New York City — tropical Sun Gemini, but sidereal (Vedic) Sun Taurus, Moon in Cancer (Punarvasu nakshatra), Rising Leo.
Behind the numbers
How your Vedic chart is calculated
Vedic astrology uses the sidereal zodiac: the signs are fixed to the stars, while Western astrology uses the tropical zodiac, fixed to the seasons. Because the Earth's axis slowly wobbles (precession), the two zodiacs have drifted apart by about 24° — that gap is the ayanamsa. This calculator uses the Lahiri ayanamsa, about 23.85° in the year 2000 and growing by about 0.014° a year, so about 24.2° in 2026. It works out the tropical Sun, Moon and Rising positions from your birth date, time and place, then subtracts the ayanamsa to get the sidereal positions. The Moon's nakshatra comes from dividing the sidereal Moon longitude into 27 equal parts of 13°20' each.
Ayanamsa (Lahiri) ≈ 23.85° + 0.014° × (year − 2000). Nakshatra = sidereal Moon longitude ÷ 13°20'. Worked example: 15 June 1990, 10:30 AM in New York (UTC−4) is 14:30 UTC. The tropical Sun is at 83.6° (Gemini) and the ayanamsa for 1990 is 23.71°, so the sidereal Sun is 83.6 − 23.71 = 59.9°, in Taurus (30–60°). The tropical Moon is at 116.7°, so the sidereal Moon is 93.0°, in Cancer — 93.0 ÷ 13.33 = 6.97, the 7th nakshatra, Punarvasu. The tropical ascendant is 146.1°, so the sidereal Rising sign is 122.4°, in Leo.
Reference
Vedic (sidereal) Sun sign dates
| Sign | Dates (approx.) | Sign | Dates (approx.) |
|---|---|---|---|
| Aries | Apr 14 – May 14 | Libra | Oct 18 – Nov 16 |
| Taurus | May 15 – Jun 14 | Scorpio | Nov 17 – Dec 15 |
| Gemini | Jun 15 – Jul 16 | Sagittarius | Dec 16 – Jan 13 |
| Cancer | Jul 17 – Aug 16 | Capricorn | Jan 14 – Feb 12 |
| Leo | Aug 17 – Sep 16 | Aquarius | Feb 13 – Mar 13 |
| Virgo | Sep 17 – Oct 17 | Pisces | Mar 14 – Apr 13 |
Vedic Sun dates run about three and a half weeks later than Western Sun dates, because of the ayanamsa shift. Dates can shift by a day in some years.
The 27 nakshatras
Each nakshatra covers 13°20' of the sidereal zodiac. The Moon spends about a day in each one.
Worked examples
Example Vedic charts
| Birth | Sun (sidereal) | Moon & nakshatra | Rising (Lagna) |
|---|---|---|---|
| 15 Jun 1990, 10:30, New York | Taurus | Cancer · Punarvasu | Leo |
| 15 Jun 1990, 10:30, Karachi | Taurus | Gemini · Punarvasu | Leo |
| 1 Jan 2000, 12:00, London | Sagittarius | Aquarius · Shatabhisha | Aries |
| 21 Jun 1995, 08:00, Los Angeles | Gemini | Cancer · Ashlesha | Cancer |
Notice the first two rows: the same birth moment in New York and in Karachi keeps the same Sun sign, but the Moon sign changes from Cancer to Gemini, because the Moon moves about 13° a day and the two places are nine hours apart. The Rising sign stays Leo in both, by coincidence of the time zones.
Tips for an accurate chart
Use the exact birth time from your birth certificate — the Rising sign changes about every two hours, so a rounded time can put it in the wrong sign.
If your birthplace is not in the list, choose “Add your own place” and type its name, latitude, longitude and UTC offset — you can look them up in any map app.
Set the UTC offset for the birth date, not today: New York is −5 in January (standard time) and −4 in June (daylight saving).
Your Vedic Sun sign is usually one sign earlier than your Western Sun sign, because of the ayanamsa — that is expected, not a mistake.
The Moon changes nakshatra about once a day, so the birth date alone is usually enough for the nakshatra, but the time sharpens it near a boundary.
Remember this is entertainment: Vedic astrology is a traditional system, not a scientific measurement of personality.
Good to know
Your Vedic chart questions, answered.
How is Vedic astrology different from Western astrology?
Vedic astrology uses the sidereal zodiac, fixed to the stars, while Western astrology uses the tropical zodiac, fixed to the seasons. The two have drifted apart by the ayanamsa, about 24° today, so a Vedic Sun sign is usually one sign earlier than the Western one — Gemini in the West is Taurus in Vedic astrology.
What is a nakshatra?
A nakshatra is one of 27 lunar mansions that divide the zodiac into equal parts of 13°20' each. In Vedic astrology the Moon's nakshatra at birth is as important as its sign, and it is worked out from the sidereal Moon longitude. For example, a sidereal Moon at 93.0° falls in Punarvasu (80°–93°20').
Why do I need my birth time and place for the Rising sign?
The Rising sign (Lagna) is the sign rising over the eastern horizon at the moment and place you were born, and it changes about every two hours as the Earth turns. Without an exact birth time and the latitude and longitude of the birthplace, it cannot be worked out at all.
Is Vedic astrology scientifically proven?
No. Studies have not found that birth signs or nakshatras predict personality or life events. Vedic astrology is a traditional system with a long history, and this calculator is for entertainment and for learning how the chart is traditionally worked out.