Celesti

Turn your browser into an AI powered astrology app.

Celesti isn't just another "horoscope of the day" widget; it's a complete, professional-grade astrological toolset powered by lightning-fast, offline calculations. Whether you're a seasoned professional astrologer or just starting to explore your natal chart, Celesti brings the cosmos to your browser with unparalleled speed and beauty. For the Modern Enthusiast: Real-Time World Clock: See a beautiful, dynamic chart of the sky right now, calculated for your exact location. AI-Powered Horoscope Interpretations: Get insightful, detailed explanations for your planets, aspects, and houses. Understand what it all means. Real-Time Horoscope Notifications: Get notified of changes in the sky in real-time, and learn what they mean with our AI interpreter. Lunar & Eclipse Tracker: Instantly find upcoming New/Full Moons and search a 5,000-year database for any solar or lunar eclipse. For the Professional Astrologer: High-Precision Ephemeris: Powered by the milnesian.ephem.js library, our calculations are fast, precise, and run entirely offline from a multi-gigabyte installed database. 12+ House Systems: Go beyond Placidus. Select from Whole Sign, Porphyry, Regiomontanus, Koch, Campanus, and more to match your practice. Full Planet & Asteroid Support: Track all major planets, luminaries, nodes, and key asteroids (Chiron, Ceres, Pallas, Juno, Vesta). Natal Chart Management: Create, save, and manage an unlimited* library of natal charts for yourself, your friends, family, or clients. Advanced Timelapse Control: Move through time with our transit calculator. Skip by the second, day, month, or week to see planetary movements unfold. Fast, Private, and Offline-First Celesti is different. All your personal data—especially your natal charts—is stored only on your computer. Nothing is ever uploaded to a server. Our "lightning-fast" calculations are possible because the entire NASA JPL ephemeris and city database is installed locally on your machine. Your charts are 100% private and load instantly. Free Version: Real-Time World Clock Your Personal Natal Chart + 1 extra saved chart Daily limits on AI interpretations, eclipse/phase searches, and time skips. Real time astrology notifications for Sun, Moon and Planets. Celesti Pro (Paid Upgrade): Unlimited Natal Chart saving Unlimited AI Interpretations Unlimited Eclipse/Phase searches and Timelapse skips Unlock all 12+ House Systems Customize Orbs & Planets All future feature updates are included! Real time astrology notifications for Sun, Moon and Planets and asteroids! Install Celesti today and turn your browser into a true window to the cosmos.