The Lahiri Ayanamsa is the most widely used calculation for the difference between tropical and sidereal zodiacs, officially adopted by the Indian government.
Ayanamsa (literally "the portion of the path") measures the difference between the tropical zodiac (based on equinoxes) and the sidereal zodiac (based on fixed stars). This difference, currently about 24 degrees, increases by approximately 1 degree every 72 years due to Earth's axial precession. The Lahiri Ayanamsa, standardized by the Indian Calendar Reform Committee, is the most commonly used measurement for Vedic astrological calculations.
TriAstra uses the Lahiri Ayanamsa for all Vedic calculations, ensuring accurate Rashi, Nakshatra, and Dasha determinations that align with the most widely accepted standards.
Understanding Ayanamsa helps you appreciate why your Western and Vedic signs may differ—it's not that one is wrong, but that they measure from different reference points.
Understanding Lahiri Ayanamsa is just the beginning. See how it manifests in your unique birth chart with TriAstra's triple-system analysis.
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