Celestial Toolbox
High-precision astronomical tools designed for observers, photographers, and time-travelers alike. Explore the mechanics of the cosmos.
Astronomy Tools & Data
Precision calculators for observers and photographers — terminator maps, moon distance, sidereal time, and exposure settings for capturing the sky as it actually is right now.
Nature and Solunar Hub
Gravitational and tidal tools for anglers, hunters, and gardeners — solunar activity windows, tide predictions, and planting calendars keyed to the moon’s cycle.
Moon Calendars & Events
Every date that matters overhead — full moons, eclipses, meteor showers, supermoons, and lunar calendars spanning Islamic, Chinese, and Hebrew traditions.
Astrology & Fun Games
Birth moon lookups, zodiac calculators, and lunar-themed trivia and puzzle games for a lighter take on the night sky.
Celestial Tools & Calculators
Terminator Calculator
Real-time shadow map showing the day/night line and visible craters.
Moon Radar Compass
Use your device’s live telemetry to find the Moon’s exact position in the sky.
Lunar 100 Guide
The ultimate moon-watching list. Track 100 must-see lunar features.
Apollo Landing Sites
Interactive map coordinates of all historic Apollo mission landings.
Northern Lights Forecast
Real-time Northern Lights tracker, Kp-Index data, and visibility maps.
Moon Phase Calendar
Exact New, First Quarter, Full, and Last Quarter dates for every month, with eclipses and meteor showers included.
Moonlight Calculator
Calculate lunar luminosity (Lux) and brightness based on weather and altitude.
Sky Clarity
Real-time stargazing grade based on local cloud cover and lunar glare.
Blue Hour
Precise blue and golden hour times for photographers and filmers.
Moon Photography
Settings, gear, and professional tips for capturing sharp lunar shots.
Looney 11 Calc
Calculate optimal camera exposure settings for photographing the moon.
Field of View Calc
Simulate telescope magnification and framing for specific targets.
Eyepiece Master Lab
Pro optical simulator and guide to help you choose the perfect eyepiece for any telescope.
Gravity Jump Sim
See how high you could leap on the Moon, Mars, or even the Sun with our physics simulator.
Moon Age Calc
Calculate your Moon age in Lunar Cycles.
Distance Calculator
Measure real-time distances between Earth and celestial bodies.
Planetary Weight
Calculate how much you would weigh on Mars, Jupiter, or the Moon.
Age on Other Planets
Calculate your age if you lived on Mars, Jupiter, or the Moon.
Moonrise Tonight
Live moonrise and moonset times for your city, with real-time altitude, azimuth, phase, and sky position.
ISS Tracker
Real-time tracking of the International Space Station’s location and passes.
Julian Date
Astronomy date converter and local sidereal time calculator.
UTC & Zulu Time
Universal and sidereal time clocks for global coordination.
Military Time
Convert standard time to military time and vice versa.
World Clock Planner
Compare times across global time zones and find the perfect meeting window.
Tide Predictor
Coastal tidal forecasts driven by real-time lunar positions.
Solunar Hunting
Predict peak wildlife activity using sun and moon gravitational data.
Solunar Fishing
Optimize catches with moon-phase specific activity forecasts.
Gardening Calendar
Sync planting with moon phases for optimal root and leaf growth.
Harvest Moon Cal
Traditional dates and folklore for the Harvest, Hunter’s, and seasonal moons.
Lunar Hair Care
Best dates for cutting hair to maximize growth or thickness.
Birth Moon Finder
Discover the exact moon phase and zodiac energy of your birthday.
Moon Personality
Reveal personality traits and hidden strengths based on your natal moon.
Astrology Portal
Daily moon sign insights, birth charts, and lunar horoscopes.
True Zodiac Sign
Discover your true zodiac sign based on current astrological alignments.
Astronomy Calendar
Track meteor showers, planetary alignments, and major celestial events.
Conjunctions
Schedule of lunar occultations and planetary meet-ups.
Eclipse Calendar
Solar and lunar eclipse dates through 2035 with visibility maps.
Supermoon Calendar
Definitive schedule of Perigee and Apogee lunar events.
Planetary Tracker
Live map of the solar system and upcoming planet parades.
Day Counter
Calculate the days, heartbeats, and moon cycles between any dates.
Islamic Calendar
Track Ramadan, Eid, and Hijri dates for the 2026-2030 lunar cycle.
Chinese Calendar
Track lunisolar dates, zodiac years, and traditional festivals.
Hebrew Calendar
Jewish holidays, Rosh Chodesh, and Shabbat times aligned with the moon.
Moon Trivia Blitz
Rapid-fire quiz on lunar history and science. Test your space knowledge.
Planet Command
A high-velocity survey of the eight worlds. Test your planetary telemetry.
Astronomer Legends
Identify the pioneers who mapped the stars. From Galileo to Hawking.
Fact or Fiction
Challenge your cosmic intelligence. Separate space reality from myths.
Impact Simulator
Planetary defense sandbox. Calculate crater size and energy of impacts.
Lunar Dictionary
Glossary of astronomical terms, lunar phases, and celestial mechanics.
Solar System Sorter
Arrange the planets in their correct orbital distance from the Sun.
Phase Sequencer
Drag and drop the moon phases into the correct orbital order.
Lunar Match
A space-themed memory card game. Find the matching celestial pairs.
Which Tool Do I Need?
With over 50 tools on this page, here’s a quick way to find the right one for what you’re doing tonight.
Planning a shoot
Start with Blue Hour for timing, then Looney 11 Calc for exposure settings.
Hunting or fishing
Check Solunar Hunting or Solunar Fishing for peak activity windows before you head out.
Stargazing tonight
Use Sky Clarity to check conditions, then Lunar 100 Guide to pick a target.
Tracking an upcoming event
The Moon Phase Calendar and Eclipse Calendar cover the next major dates worth watching for.
Gardening by the moon
The Gardening Calendar aligns planting windows with the current lunar phase.
Just curious
Try Moon Trivia Blitz or the Birth Moon Finder for a lighter way in.
Frequently Asked Questions
Are these tools free to use?
Yes, every tool on this page is free with no sign-up required.
How accurate are the astronomical calculations?
Tools use real-time astronomical data and established formulas (such as SunCalc and Meeus algorithms) for positions, phases, and timing. Precision is suitable for observing and photography planning, not for professional or navigational use.
Do I need to enter my location?
Most tools auto-detect your location for local times and positions, but you can also search or enter a location manually where supported.
What’s the difference between the Terminator Calculator and Sky Clarity?
The Terminator Calculator shows the day/night line on the moon’s surface to help you see which craters are visible right now. Sky Clarity instead scores your local viewing conditions using cloud cover and lunar glare.
Can I use these tools on mobile?
Yes, all tools are built to work on phones and tablets, including the Moon Radar Compass, which uses your device’s live telemetry.