How does the Sunrise & Sunset Calculator work?

This calculator uses the date you provide and your geographical coordinates (latitude and longitude) to fetch data from a public astronomical API. This API calculates the various solar events based on established astronomical algorithms.

How accurate is the 'Use My Current Location' feature?

The accuracy depends on your browser's Geolocation API and your device's GPS or network location capabilities. It's generally quite good for most purposes but can vary. For highest precision, manually enter your coordinates if you know them.

What do the different twilight times mean?

Civil Twilight: Period when the sun is 6 degrees below the horizon. Enough light for outdoor activities without artificial illumination.Nautical Twilight: Period when the sun is between 6 and 12 degrees below the horizon. Horizon is usually visible.Astronomical Twilight: Period when the sun is between 12 and 18 degrees below the horizon. Sky is dark enough for most astronomical observations.

Why are the results shown in my local time?

The API returns times in UTC (Coordinated Universal Time). Our calculator then converts these UTC times to your browser's local time zone for your convenience.

Can I calculate for past or future dates?

Yes, you can select any date using the date picker to get sunrise and sunset information for past or future days.

Sunrise & Sunset Calculator

Plan your day perfectly by knowing the exact times for sunrise, sunset, total daylight duration, solar noon, and various twilight phases. Our daylight duration calculator works for any date and location.

Sunrise, Sunset & Daylight Calculator

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Understanding the Terms

Sunrise/Sunset: The time when the upper limb of the Sun appears above/disappears below the horizon.
Daylight Duration: The total time between sunrise and sunset.
Solar Noon: The time when the Sun is at its highest point in the sky for the day.
Civil Twilight: When the Sun is 0-6 degrees below the horizon. Bright enough for outdoor activities.
Nautical Twilight: When the Sun is 6-12 degrees below the horizon. Horizon visible for navigation.
Astronomical Twilight: When the Sun is 12-18 degrees below the horizon. Sky is dark for astronomy.

All times are adjusted to your local browser time zone.

Frequently Asked Questions

Plan Your Day with Precision

Use our Sunrise & Sunset Calculator to check daylight hours for any location and date.