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Vedic Astrology Meets Precision Astronomy

Timeless Vedic Knowledge,
Astronomical Precision.

HoraJnana is a professional astrological computing platform delivering real-time planetary Hora countdowns, complete Panchanga limbs, multi-style Kundali charts, and Muhurta timings — calculated with Swiss Ephemeris sub-arcsecond accuracy and zero cloud tracking.

Swiss Ephemeris AGPL v3
AES-256 Encrypted
Zero Cloud Telemetry
Current Planetary Hora
Dynamic Live Countdown
HoraJnana App Home Screen
Vedic Precision
North • South • East Charts
0.001° Astronomical Accuracy Direct Swiss Ephemeris Planetary Ephemerides
3 Styles Kundali Chart Engines South Indian, North Indian, East Indian
AES-256 Local File Security Client-side Web Crypto API encryption
100% Privacy Preserving Zero telemetry, no ad SDKs, no trackers

Built for Every Device & Workflow

Whether you prefer a native Android experience, a zero-install Progressive Web App for iPhone Safari and Desktop, or direct integration with our open-source calculation backend.

Google Play Store

HoraJnana for Android

The native Android edition of HoraJnana, fully optimized for smartphones and tablets with high-performance rendering, offline storage, and home-screen widgets.

  • Available directly on Google Play (Package: com.hora.jnana)
  • Hardware-accelerated SVG astrology chart rendering
  • Automated sunrise, sunset, and daylight duration synchronization
  • AES encrypted birth database export to Android internal storage
Developer & Engine

HoraJnana REST API

A Python and Swiss Ephemeris microservice providing accurate ephemerides calculations, Dasha hierarchy timelines, and astronomical coordinate transformations.

  • Powered by Swiss Ephemeris library by Astrodienst AG
  • Lahiri, Raman, Krishnamurti, and Fagan-Bradley Ayanamsa
  • Generates high-resolution vector SVGs for Kundali charts
  • Open-source under GNU Affero General Public License v3 (AGPL)

Everything You Need for Vedic Horary

Crafted specifically for Vedic astrologers, researchers, and practitioners who require exact celestial timings and zero latency.

Live Planetary Hora Countdown

Real-time tracking of the active Hora with remaining seconds and minutes. Automatically triggers updates when the ruling planetary hour transitions.

Complete 5 Panchanga Limbs

Exact ending moments for Tithi, Nakshatra, Yoga, Karana, and Vara. Accompanied by full Vedic calendar elements: Samvatsara, Ayana, Rutu, Masa, and Paksha.

Interactive Kundali Engine

Toggle between South Indian, North Indian, and East Indian visual chart conventions. Explore planetary degrees, Moon Nakshatra, and retrograde indicators.

3-Level Dasha Hierarchy

Hierarchical drill-down through Vimshottari Dasha periods: Mahadasha, Antardasha, and Pratyantardasha, with live balance calculations and breadcrumb navigation.

Precise Muhurta Periods

Accurate calculations for Rahu Kalam, Yamaganda, Gulika, and Abhijit Muhurta based on dynamic sunrise and sunset coordinates for the user's specific location.

Bilingual English & Kannada

Complete high-fidelity localization. Toggle instantly between English and Kannada (ಕನ್ನಡ) with authentic Vedic terminology rendered natively in Noto Sans Kannada.

Experience the Interface

Crafted with Google Material Design 3 guidelines for an uncluttered, distraction-free astrological study experience.

App Screenshot

Intuitive Live Dashboard

The main command center provides immediate awareness of the current planetary hora, remaining time, today's tithi, sunrise/sunset, and quick navigation to all astrological limbs.

  • Live automatic polling every minute
  • Single-tap location override from global database
  • Zero advertisements, clean typography
HoraJnana Dashboard Screen

Built on Trusted Astronomical Standards

HoraJnana bridges thousands of years of classical Indian astronomical literature with modern computational accuracy and cryptography.

Swiss Ephemeris Core

Powered by the ephemeris library developed by Astrodienst AG, based on NASA Jet Propulsion Laboratory (JPL) planetary models. Licensed under GNU AGPL v3.

Web Crypto API & AES-GCM

Kundali birth files are encrypted on the client side using AES-GCM 256-bit keys. Your personal birth dates, times, and coordinates are never stored unencrypted.

Cross-Platform Sync

Encrypted chart JSON files can be transferred seamlessly between the native Android app and the Web App with full bidirectional compatibility.

Strict Privacy & Google OAuth Compliance

HoraJnana was built around the principle that astrological data and location coordinates are private. We comply strictly with Google API Services User Data Policy, including the Limited Use requirements.

  • GPS used on-device only for sunrise/sunset math
  • No real-time location sent or saved to remote databases
  • Anonymous device UUID for session security
  • Zero data sharing with external advertising brokers

Privacy Guaranteed

We never sell or commercialize user data. All calculations and stored profiles belong solely to you.

Common Inquiries

Learn more about how HoraJnana handles calculations, data privacy, and multi-device access.

Vedic astrology calculations (such as Sunrise, Sunset, Hora start/end times, Ascendant/Lagna, and Muhurta windows) depend directly on geographic latitude, longitude, and elevation. HoraJnana computes these values locally using on-device ephemerides or ephemeral API requests. Your real-time GPS coordinates are never stored permanently or tracked on our servers. You can also bypass GPS entirely by choosing a manual city location.
HoraJnana uses an anonymous, cryptographically generated device UUID to provide authenticated API access. For users signing in or linking their accounts via Google OAuth, only basic profile information (such as user verification and email for profile sync) is accessed in strict compliance with the Google API Services User Data Policy, including Limited Use requirements. We never request sensitive or unnecessary permissions.
Yes! HoraJnana is built as a full Progressive Web App (PWA). Open https://skanda-p-r.github.io/HoraJnana-Web-App/ in Safari on your iPhone or iPad, tap the Share button at the bottom, and select "Add to Home Screen". The app will appear on your iOS home screen and launch in standalone full-screen mode with safe-area support for Dynamic Island and notched devices.
HoraJnana consumes the Swiss Ephemeris (Astrodienst AG), which is recognized as the world standard in astrological precision, accurate to within 0.001 arcseconds against NASA JPL DE431/DE406 numerical integrations. It supports multiple Ayanamsas including Lahiri (Chitra Paksha), BV Raman, Krishnamurti (KP), and Fagan-Bradley.
In the application Settings screen, you can tap "Reset Cache", "Reset Settings", or "Logout" at any time. This immediately wipes all cached ephemerides, saved chart profiles, and authorization tokens stored on your device.