Janma Lagna - Sidereal Ascendant - Lahiri Ayanamsa - Requires birth time and place
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Calculate Lagna
The Lagna, or ascendant, is the zodiac sign rising on the eastern horizon at the exact moment of birth. In Vedic astrology, the Lagna is considered the most personal and significant point in a birth chart - more revealing of temperament and life path than even the Sun sign used in Western horoscopes. Indian astrologers have relied on accurate Lagna calculation for over 2,000 years, with classical texts like the Brihat Parashara Hora Shastra detailing its precise computation.
This calculator uses the Lahiri ayanamsa, the officially adopted standard for Vedic astrology in India since 1955, as recommended by the Government of India's Calendar Reform Committee. Unlike Western tropical astrology, Vedic calculation accounts for the Earth's axial precession - currently around 23 degrees - making the sidereal positions meaningful for Jyotish analysis. The result is accurate to within 2 degrees when birth time is correctly recorded.
Knowing your Lagna sign helps in Kundli matching for marriage, identifying your ruling planet (Lagna lord), and selecting auspicious muhurtas for events. Students preparing for UPSC mains may also encounter Lagna concepts in Indian culture-related papers. Astrologers across Tamil Nadu, Rajasthan, and West Bengal consult Lagna charts daily for naming ceremonies, business launches, and property transactions.