Why Your 'Western Sign' and 'Vedic Sign' Differ: Lahiri Ayanamsa Explained

Western astrology uses the tropical zodiac, anchored to the equinoxes; Vedic astrology uses the sidereal zodiac, anchored to the fixed stars. Because Earth's axis slowly precesses, the two zodiacs drift apart by about one degree every 72 years — a gap called the ayanamsa.

In 2026 the Lahiri ayanamsa — the official standard adopted by the Indian Calendar Reform Committee — stands near 24°13′. Subtract it from a tropical position and you get the sidereal position: which is why someone with a tropical Leo Sun is very often a sidereal Karka (Cancer) native.

All ShubhLekha calculations use Lahiri ayanamsa with classical whole-sign houses — the configuration the vast majority of Indian panchangs and practitioners follow.

See your sidereal chart free below.

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