Panchang intelligence, explained
How the calculations work, why festivals fall when they do, and how to build on top of it.
Why Diwali 2026 Falls on 8 November
The full derivation, with the overlap minutes the engine actually used — and why a sunrise-matching engine picks the wrong day.
· 6 min read
Understanding Kala Vyapini
How our multi-authority rule hierarchy ensures accurate and culturally appropriate festival dates.
· 8 min read
How Panchang Calculations Work
A deep dive into tithi, nakshatra, yoga, and karana computation using Swiss Ephemeris.
· 10 min read
Festival Engine: Rule Derivation Explained
From astronomical positions to festival dates — the complete derivation pipeline with code examples.
· 12 min read
Drik vs Vakya Panchang: What Developers Need to Know
Understanding the two major Panchang traditions and how our API bridges them.
· 7 min read
Swiss Ephemeris Explained
Why we chose Swiss Ephemeris for astronomical calculations and how it powers our platform.
· 6 min read
Adhika Maas: The Extra Month in Hindu Calendar
Why some years have 13 months, how it's determined, and how to compute it.
· 7 min read
Tithi Calculator: How It Works
From Sun-Moon angle to tithi name — the complete computation pipeline with interactive examples.
· 8 min read