MoonCalc lets visitors explore lunar history with an online calendar and date controls.
SunCalc
SunCalc lets users examine the path of the Sun with an online calendar and date controls.
About SunCalc
SunCalc is a web-based tool for examining sun movement and sunlight phases for specific locations and dates. It offers an interactive map, date and time controls, and outputs including sunrise, sunset, shadow length, sun position, and photovoltaic-related solar metrics. Users can toggle live mode, adjust dates across a wide historical and future range, and run reverse calculations from specified sun altitude or azimuth values.
Key features
- Interactive map displaying sun path and sunlight phases
- Date and time controls for sun position adjustment
- Outputs sunrise, sunset, shadow length, sun altitude/azimuth
- Live mode for real-time sun position tracking
- Reverse calculation from sun altitude or azimuth values
- Photovoltaic-related solar metrics including irradiance and air mass
Best for: It is most useful for users needing sun position, sunlight timing, or basic solar data for specific locations and dates.
Good for
- Consolidates multiple sun movement and sunlight phase data points in one interface
- Supports date selection across a broad range from 1499 BCE to 3000 CE
- Includes reverse calculation functionality to derive time from sun altitude or azimuth
SunCalc at a glance
- Website
- suncalc.org
- Category
- Education & Learning › Space & Astronomy
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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SunCalc FAQ
Can I view sun data for dates outside the current year?
Yes, the tool supports date selection across a range from 1499 BCE to 3000 CE.
Does SunCalc provide real-time sun position updates?
Yes, it includes a live mode that can be stopped using the STOP LIVE button.
Can I calculate what time the sun was at a specific altitude or azimuth?
Yes, the reverse calculation feature computes time from user-provided sun altitude and azimuth values.
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