About the Solar Calendar

The Solar Calendar is an interactive tool for visualizing the rhythm of the sun. It allows you to explore how day length, sunrise, and sunset times change throughout the year for any location on Earth. It's a powerful tool for astronomers, photographers, gardeners, and anyone curious about the Earth's relationship with the sun.

Understanding the Data

• Today's Sun Track: A visual representation of the current day, showing the times for dawn, sunrise, solar noon, sunset, and dusk. A live marker shows the sun's current position.
• Day Length Chart: An annual graph that clearly shows the rise and fall of daylight hours from the winter solstice (shortest day) to the summer solstice (longest day).
• Monthly Glance: A grid comparing the average daylight for each month, highlighting the months with the most and least amount of sun.

Key Features

• Global Location Support: Use presets for major cities or enter the exact latitude and longitude for your location.
• Interactive Charts: Hover over the yearly chart to see the exact day length for any day of the year.
• Precise Calculations: Based on the proven SunCalc.js library for reliable astronomical data.
• Embeddable Widget: Share your local solar calendar on your own website.