Astronomy Tools

Professional sky data · extracalc.com
📍 Location
📅 Date
🕐 Time
🌐 UTC offset
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Sun Position CalculatorPhotographers · Architects · Solar industry · Outdoor
Altitude
Azimuth
Direction
Status
🌅 Sunrise
🌇 Sunset
🌞 Solar noon
⏱ Day length
🧭 Sunrise dir.
🧭 Sunset dir.
📐 Max altitude
🌍 Declination
SunriseSolar noonSunset
💡 Photographer: Use azimuth to plan the sun's position relative to your subject. Side-lighting at low altitude = dramatic shadows.
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Golden Hour CalculatorPhotographers · Drone pilots · Video creators · Real estate
🌄 Morning
Astronomical twilight
Nautical twilight
Blue Hour begins
⭐ Golden Hour begins
⭐ Golden Hour ends
Duration
🌇 Evening
⭐ Golden Hour begins
⭐ Golden Hour ends
Duration
Blue Hour ends
Nautical twilight
Astronomical twilight
💡 Drone tip: Launch 5 min before Golden Hour. Blue Hour gives cool city tones. Check drone regulations for twilight flying in your country.
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Moon Phase CalculatorPhotographers · Astronomers · Tide watchers · Camping
Illumination
Age (days)
Distance
🌕 Moonrise
🌑 Moonset
📐 Altitude
🧭 Direction
📅 Next new moon
📅 Next full moon
🌊 Tidal effect
📷 Photo rating
💡 Milky Way tip: New Moon = darkest skies. Full Moon rises at sunset — perfect for moonrise cityscape shots.
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Night Sky TonightBest objects visible from your location right now
🌌 Milky Way
🔭 Best window
💡 Sky quality
💡 Allow 30 min for dark adaptation. Red torch only. Moon phase is the biggest factor for faint objects.
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Planet VisibilityRise · transit · set · current altitude for all planets
PlanetAltitudeDirectionRiseTransitSetRating
💡 Above 20° = clearest views. Venus is always near the Sun — look for it just after sunset or before sunrise.
Polaris FinderNorth Star · star trail photography · navigation
Altitude
Azimuth
Visible
How to find
Big Dipper
Cassiopeia
500-rule exposure
💡 Polaris altitude ≈ your latitude. For circular star trails, point your camera at Polaris and use 500÷focal length for max exposure seconds.
Southern Cross FinderSouthern hemisphere navigation · astrophotography
Altitude
Azimuth
Visible
True South
Rise
Set
Best monthsApr – Jun
💡 Extend the long axis of Crux 4.5× beyond the foot star — that point on the horizon is due South.
🔭
Enter a location and click Calculate
Select the tools you need above · results appear here