Our Apps
Orbit
Your SkyGuide
A free astronomy companion - planets, the Moon, ISS passes, meteor showers, sky charts, eclipses, panchanga, and 55 calendar systems. All computed for your exact location. No ads, no signup, no tracking.
Open astronomyapps.com →What it is
A free astronomy companion for stargazers in India and beyond
Orbit is the app we kept wishing we had on our camps. Open it, set your location, and you get a clean answer to "what's worth looking at tonight" - planets, the Moon, ISS passes, meteor showers, the Milky Way's visibility window, all calculated for exactly where you are.
Sky tools
Everything you'd want, in one place
Tonight's Sky
What to look for right now from your location
ISS Pass Predictor
Exactly when and where to look
Planet Tracker
Rise/set times, brightness, direction, upcoming events
Moon Phase Calendar
Monthly phases, illumination, best deep-sky nights
Interactive Sky Chart
Stars, constellations, and planets on a live map
Meteor Shower Calendar
Peak dates, hourly rates, Moon interference
Astronomy Events
Eclipses, conjunctions, oppositions, occultations
Find Eclipses Near Me
Upcoming eclipses visible from your location
Compass & Orientation
Sun and Moon direction overlays
Milky Way Finder
Best viewing windows from your location
Light Pollution Guide
Bortle scale and what's visible from your sky
Comet Tracker
Position, brightness, visibility
The Indian sky
Astronomy as Indian traditions see it
The Indian astronomical tradition is one of the oldest continuously practised in the world. Orbit treats it the way it deserves to be treated - astronomically, not predictively. Tithi, nakshatra, panchanga, navagraha - all computed from real planetary positions, no astrology fluff.
Panchanga
Tithi, nakshatra, yoga, karana - computed astronomically
Nakshatra Guide
All 27 nakshatras mapped to real stars you can see
Rasi
Sidereal zodiac positions of all planets
Festival Astronomy
The sky behind Diwali, Holi, Pongal, and more
Indian Star Lore
Dhruva, Saptarishi, Arundhati, Agastya
Navagraha
Live positions of all 9 grahas including Rahu and Ketu
Discover Stories
Stories from Indian astronomical history and tradition
Living calendars
55 calendars across 8 traditions
Every calendar in the world is, at its root, an astronomical calendar. Orbit shows you why - and lets you build one yourself.
Explore Calendars
See any date through 55 calendar systems - Malayalam, Tamil, Hijri, Hebrew, Chinese, Ethiopian, Solar Hijri, Baha'i, Coptic, Vikram Samvat, and many more.
Make Your Own Calendar
Make the same decisions ancient astronomers made. Pick the Sun or the Moon, choose your rules, and see which real calendar you just built.
What it isn't
Coming soon
WhatsApp alerts
Want a ping the moment the ISS flies overhead or an eclipse is visible from your city? Our optional WhatsApp notifications service launches soon - ₹49/month. The website stays completely free either way; alerts just save you the work of checking.
Notify me when it launchesOpen it
astronomyapps.com
Works on phone, tablet, or desktop. Add it to your home screen and it behaves like a native app.
Open Orbit →