SkyChecker

Discover whaDiscover what's visible in the night sky tonight — right from your backyard.

SkyChecker uses NASA's Jet Propulsion Laboratory data to show you exactly which celestial objects are visible from your location. No guesswork, no complicated star charts — just a simple list of what you can see and when.

WHAT YOU CAN TRACK • The Moon with current phase and illumination percentage • All planets from Mercury to Neptune • Deep sky objects: Andromeda Galaxy, Orion Nebula, Pleiades, and more • International Space Station (ISS) passes • Meteor shower alerts with peak times and hourly rates

WEATHER INTEGRATION • Live cloud cover and visibility conditions • Observation quality rating (1-5 stars) • Detailed weather breakdown: humidity, wind, cloud layers • Tips for optimal viewing based on current conditions

PLANNING TOOLS • Equipment difficulty ratings (Naked Eye, Binoculars, Telescope) • Rise, set, and peak viewing times with compass directions • Date picker to plan future observing sessions • Share tonight's sky with friends and family

POWERFUL FEATURES • Automatic GPS location detection • Manual coordinate entry for precise locations • Smart caching for fast app launch • Elegant retro terminal-style interface with ASCII art

HOW IT WORKS SkyChecker connects to NASA's Horizons Ephemeris System — the same data source used by professional astronomers — to calculate precise positions for celestial objects based on your exact location and time zone.

Weather data comes from Open-Meteo, providing real-time cloud cover, visibility, and atmospheric conditions to help you plan the perfect observing session.

PERFECT FOR • Casual stargazers curious about tonight's sky • Amateur astronomers planning observation sessions • Educators teaching astronomy concepts • Anyone who's ever looked up and wondered "what's that?"

PRIVACY FOCUSED Your location stays on your device. We don't track you, collect personal data, or show ads. The only external connections are to NASA's public astronomical database and Open-Meteo weather service.

Clear skies!