Background and context Janampatri applications compute horoscopes using astronomical data and Vedic astrological rules (panchanga, ayanamsha, house and sign calculations, divisional charts, dashas, yogas). Users range from curious laypeople to professional astrologers who rely on precise calculations and interpretive tools. As with any software that performs mathematically sensitive computations and stores personal data (birth date, time, place), accuracy, correctness, and security are critical.