Below, find an interactive sundial calculator that shows how a sundial would work throughout the day at your choice of […]

Our shadow length calculator shows real-time shadow length and direction for any object height, location, date, and time. See an […]

Use our analemma calculator to visualize the sun's annual figure-8 pattern and calculate the equation of time for any day […]

Below, find an interactive solar noon calculator that pinpoints when the sun reaches its highest point in the sky for […]

Craving a quick reference for twilight times? Our twilight calculator shows you all three phases – civil, nautical, and astronomical […]

Need to know when the sky is dark enough to see the Andromeda Galaxy with your eyes? Our astronomical twilight […]

Need to know when the stars and horizon are appropriately bright enough for your sextant? Our nautical twilight calculator shows […]

Need to know when you can still work outside without a work light? Our civil twilight calculator shows you when […]

Need precise sun angle data for a specific date and location? Our sun angle calculator provides hour-by-hour solar altitude and […]

The Sun Path Diagram Generator creates polar sun path visualizations showing how the sun moves across the sky throughout the […]