Varāhamihira, also known as Varāha or Mihira, was a renowned Hindu astrologer-astronomer and polymath who lived during the 6th century CE in present-day Ujjain, India. Born around 505 CE and dying around 587 CE, he was the son of Adityadasa, an astronomer who first instructed him. While the exact details of his life remain debated, Varāhamihira is historically significant as a compiler who synthesized earlier astronomical knowledge into his texts, particularly in his famous "Pancha-Siddhantika" ("Five Treatises"), which drew from Greek, Egyptian, Roman, and Indian sources.
Varahamihira calculated the length of the sidereal year (time for Earth to orbit the Sun relative to fixed stars) as . Modern measurements place it at 365.256363 days. The difference? Only about 3.5 minutes off after 1,500 years. When verified against NASA's ephemeris data, this margin falls within the observational limits of naked-eye astronomy using gnomons and water clocks.
Contextual.
om namo vighnarājāya varāhāya namo 'stu te kṣitīśvarāṇāṃ hi saṃhitaṃ yasya kīrtyā vinirṇayāḥ || 1.1 ||
However, the fact that a medieval commentator like Utpala could identify and flag these passages actually strengthens the credibility of the rest of the text. It shows an ancient scholarly tradition that was already engaged in textual criticism, attempting to separate the original author's words from later additions. This means that while the core of the Brhat Samhita is authentic, scholars must carefully navigate which parts of the received text originated with Varāhamihira and which were added later. the brhat samhita of varaha mihira varahamihira verified
He provides specific chemical recipes for making rock-hard, water-resistant plasters and cements using organic materials like resin, beeswax, molasses, mud, and metallic compounds. These formulas kept ancient temples standing for centuries. 4. Gemology and Metallurgy
Observing the growth, color, and abnormalities of specific trees (like the Jamun or Bilva) to determine the depth and direction of water veins. Varāhamihira, also known as Varāha or Mihira, was
: Varahamihira classified 22 types of jewels, describing their purity, sources, and even market prices.
Brhat-Samhita of Varaha-Mihira(Set of Two Volumes) By N Chidambaram Lyer Varahamihira calculated the length of the sidereal year
While later legends embellished Varāhamihira's life and later scribes introduced errors and interpolations into his text, the core work stands as a monumental achievement. It represents the best of ancient Indian jyotisha (the science of light)—a discipline that blended rigorous observation and mathematics with a holistic view of the cosmos.