open-source tamil calendar calculation engine using precise solar transit astronomy, lahiri ayanamsa, and the traditional 13-ghatika rule. சூரிய பெயர்ச்சி, லஹிரி அயனாம்சம் மற்றும் பாரம்பரிய 13 கடிகை விதியை அடிப்படையாகக் கொண்டு தமிழ் காலண்டர் தேதிகளை கணக்கிடும் திறந்த மூல நிரல்.

A Bikram Samvat Calendar for Android.

The open-source sky engine - astronomy-grade Sun/Moon positions, sunrise/sunset, moon phases, and Vedic panchang. Zero dependencies, MIT.

Indian calendar that covers expected festivals, government holidays and good to know days as json.

A simple utility to show the details of the day per Tamil calendar

Live in-browser demo of the grahan astronomy + Vedic astrology (Jyotish) TypeScript library: panchang, eclipses, kundali birth charts, and a Bikram Sambat calendar.

Daily Hindu calendar with tithi, nakshatra, sunrise timings, and festival context.

Bharatiya calendar infrastructure — Panchang, festivals, muhurat, regional calendars

Vedic Astronomical Audit tool.

Official code examples for DevDarsha Panchang, Horoscope and Numerology APIs. Build Vedic astrology and calendar integrations in minutes.

Ekadashi API & Web Calendar 🕉️. An astronomical calculator for accurate Ekadashi fasting dates using Sun-Moon longitude and the Arunodaya rule. Includes Telegram bot and REST API

Flutter Hindu calendar app with Panchang, festivals, Choghadiya, horoscope-oriented daily utilities, and Hindi-first UX.

Sankashti Chaturthi & Purnima API 🌙. Accurate Hindu lunar calendar calculator using Sun-Moon angular mathematics. Public REST API with Purnima and Sankashti dates.

A beautiful, modern Hindu Calendar & Panchang app for Android built with Jetpack Compose & Material 3. Features tithi calculations, sacred festival guides, custom event reminders, sacred chimes, Material You dynamic themes, and multilingual support (English, Hindi, Telugu).

Sankashti Chaturthi Moonrise PWA — tiny installable app for tithi-based moonrise tracking

Amavasya & New Moon REST API 🌑. High-accuracy Hindu Panchang calculator using astronomical math. Includes monthly spiritual significance and full year lunar calendar

Open Source Amavasya & New Moon API. Accurate Hindu Lunar Calendar calculator using astronomical moon-sun positions. Free REST API for developers.

Free, open-source Telugu Panchangam — any city, any date. The sky has no expiry date.

Offline Panchanga and Hindu Calendar widget for KDE Plasma 6, powered by Swiss Ephemeris. Features accurate astronomical calculations, Dharmaśāstra-based festival rules, Ghadi-Vipal time, and a modern Kirigami interface.

Panchang API. Tithi, nakshatra, yoga, karana plus 15 muhurtas including rahu kaal, abhijit, brahma, varjyam, chandrabalam, tarabalam.