Today in the Sky
Tonight's Moon phase, the planets' places and the next eclipses and seasons, plus a ranked "what's up tonight" list of the best targets to see from your location.
SunSunrise, Sunset & Dark Window
Sunrise, sunset, solar noon, day length and the three twilights, plus the moonless dark window and the next 30 nights ranked for observing.
MoonMoon Phase Calendar
Tonight's moon phase and a month grid of the new, quarter and full moons, with traditional full moon names.
EclipsesEclipse & Saros Explorer
The next solar and lunar eclipses, the next one visible from your location with local times, and the Saros series behind them.
PlanetsPlanet Parade Tracker
When the next planet parade is visible from your location, where to look, and how to see it, with a live countdown.
ConjunctionsPlanet Conjunctions
When two planets meet in the sky, with live dates and how close they pass: Venus and Jupiter, the great conjunction, and more.
Solar systemLive Orrery
An interactive solar-system map: scrub time, switch the Sun- and Earth-centered views, and trace retrograde loops.
StarsThe 88 Constellations
A searchable catalog and star-chart viewer for all 88 constellations, drawn from real star positions.
About these tools
Every tool here runs entirely in your browser and uses a built-in astronomy engine, so the Moon phase, planet positions, rise and set times and eclipse predictions are computed live for any date and place, not looked up from a fixed table. Tap "Use my location" where offered to centre everything on your own sky.
Want the underlying rhythms or the lessons behind them? Browse every astronomical cycle in the Cycles section, or explore the interactive explainers in Learn.