Rahu

All three are legitimate. Sanskrit (राहु) is the original scriptural form found in the Vedas, Puranas, and Sutras. Telugu (రాహు) is the regional adaptation used in daily practice across Andhra Pradesh and Telangana. English transliteration (Rahu) is a modern convenience for cross-cultural communication. For ritual accuracy and mantra chanting, Sanskrit pronunciation matters. For everyday discussion — including with a purohit — Telugu is perfectly fine. In writing (blogs, calendars, apps), English transliteration is the practical choice for reach.

The definitions on this site are cross-referenced against the primary Vedic sources — Brihat Parashara Hora Shastra (astrology), Muhurta Chintamani (electional), Surya Siddhanta (astronomy), Gṛhya Sūtras (household ritual), and the Rig/Yajur/Sama/Atharva Veda (foundational). Modern reference works include Panchanga Ganitam by K. S. Krishnamurti and the Rashtriya Panchang (Government of India). For deeper study, consult a qualified acharya or the glossary editorial team.

Regional variations exist for almost every Vedic term. North Indian traditions (Vikram Samvat calendar, Purnimanta month convention) may compute or observe the same concept slightly differently from South Indian traditions (Shalivahana Shaka calendar, Amanta month convention). The underlying scriptural definition is the same; the applied practice varies. Telugu, Tamil, Kannada, and Malayalam traditions typically follow Amanta reckoning; Hindi, Marathi, and Gujarati traditions typically follow Purnimanta. For this term, both systems produce equivalent results when interpreted correctly — differences are in nomenclature, not substance.