How I Built a Vedic Panchang Engine in TypeScript — Swiss Ephemeris, Meeus Fallback, Zero External APIs
The article describes the development of a Vedic Panchang engine in TypeScript that calculates astronomical data such as planetary positions, sunrise, and lunar cycles without relying on external APIs. It uses Swiss Ephemeris for high-precision calculations on the server, with a fallback to Meeus algorithms for environments where native modules are unavailable. The system is designed for accuracy and portability across different runtime environments.
- ▪The Panchang engine computes all astronomical values locally on the server using either Swiss Ephemeris or Meeus algorithms.
- ▪Swiss Ephemeris provides sub-arcsecond accuracy and is used as the primary engine, while Meeus serves as a mathematical fallback.
- ▪The implementation includes memoization to optimize performance by caching Julian Day-based calculations.
- ▪Each Panchang consists of five components: Tithi, Nakshatra, Yoga, Karana, and Vara, all derived from precise astronomical computations.
- ▪The engine is integrated into a Next.js application and supports server-side computation without third-party services.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3936028) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Adi Kumar Posted on May 17 How I Built a Vedic Panchang Engine in TypeScript — Swiss Ephemeris, Meeus Fallback, Zero External APIs #algorithms #nextjs #typescript #mathematics Sub-arcsecond planetary positions, sunrise for any location on Earth, and an entire astronomical calendar — all computed server-side in a Next.js app.
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