Vedic vs Western astrology: what is actually different?
The main difference is the zodiac. Vedic astrology uses the sidereal zodiac, fixed to the stars, and Western astrology uses the tropical zodiac, fixed to the seasons. They are about 24 degrees apart today, so most people's Vedic sign is the sign before their Western one.
Side by side
| Vedic (Jyotish) | Western | |
|---|---|---|
| Zodiac | Sidereal (fixed to the stars) | Tropical (fixed to the equinox) |
| Starting point | Lahiri ayanamsa, about 24 degrees behind the tropical zodiac | March equinox is 0 degrees Aries |
| Most emphasised sign | Moon sign (rashi) and rising sign (lagna) | Sun sign |
| Houses | Usually whole-sign | Often Placidus or other quadrant systems |
| Planets used | Seven visible bodies plus Rahu and Ketu (the lunar nodes) | Usually adds Uranus, Neptune and Pluto |
| Timing method | Dashas, from the Moon's nakshatra | Transits and progressions |
| Lunar mansions | 27 nakshatras | Not used |
Why your sign changes
The Earth's axis slowly wobbles, so the equinox drifts against the stars by about one degree every 72 years. The two zodiacs lined up around the year 285 CE by the Lahiri reckoning, and have drifted apart by about 24 degrees since. Vedic astrology keeps the signs on the stars, so the Sun is in a different sign from the Western one for most of the year.
If your Western Sun sign is Taurus, your Vedic Sun sign is usually Aries. Planets in the last six degrees or so of a tropical sign stay in the same sign in both systems.
Which one should you use?
They answer different questions and neither is a calculation error. Many people use the tradition they grew up with. If you want to compare your signs in both zodiacs, the sidereal vs tropical calculator shows them side by side.
Frequently asked questions
Is Vedic astrology more accurate than Western astrology?
Both use accurate astronomy. They differ in the reference frame and in how they interpret the chart. Neither has been shown by research to predict events.
Why is my Vedic Sun sign different from my zodiac sign?
Vedic astrology uses the sidereal zodiac and Western astrology uses the tropical zodiac. They are about 24 degrees apart.
Does Vedic astrology use the Sun sign?
Yes, but the Moon sign and rising sign carry more weight in the tradition.
Keep reading
Want to talk about your own chart?
Vedic Astrolab is an AI companion that reads your calculated Vedic chart and remembers your conversation. Your first minutes are free.
Start a conversation