How accurate are these calculations?

The tool uses the NOAA Solar Calculator algorithm, which is accurate to within a few minutes for most locations and dates. Accuracy is slightly reduced at extreme latitudes (above 72 degrees) and for dates far from the present.

Where do I find my latitude and longitude?

You can find your coordinates in Google Maps (right-click your location) or in your phone's Maps app. Latitude ranges from -90 (South Pole) to +90 (North Pole); longitude from -180 to +180.

Solar noon is the moment when the Sun reaches its highest point in the sky for the day — exactly halfway between sunrise and sunset. It is not always 12:00 PM clock time due to timezone boundaries and the equation of time.

What is civil twilight?

Civil twilight is the period just before sunrise and just after sunset when the Sun is between 0 and 6 degrees below the horizon. Outdoor activities are still possible without artificial light during civil twilight.

What happens at extreme latitudes?

Near the poles, there are periods of midnight sun (no sunset) or polar night (no sunrise). The tool will display a message indicating these conditions rather than showing invalid times.

Does this account for daylight saving time?

The tool uses a manual UTC offset that you set. You are responsible for entering the correct offset for your location, including any daylight saving time adjustment in effect for your chosen date.

Sunrise Sunset Calculator

Name: Sunrise Sunset Calculator
Availability: InStock
Author: Nham Vu

Enter a latitude, longitude, and date to instantly calculate sunrise, solar noon, sunset, and day length using the NOAA algorithm — fully client-side.

Location & Date

Latitude

-90 (S) to 90 (N)

Longitude

-180 (W) to 180 (E)

Date

UTC Offset (hours)

Quick Presets

Enter a location and date, then click Calculate.

Summary

Enter a latitude, longitude, and date to instantly calculate sunrise, solar noon, sunset, and day length using the NOAA algorithm — fully client-side.

How it works

Enter the latitude and longitude of your location (positive = North/East, negative = South/West).
Select the date you want to calculate solar times for.
Choose your UTC offset to display times in your local timezone.
Click "Calculate" — the tool runs the NOAA solar algorithm in your browser.
Results show sunrise, solar noon, sunset, day length, and civil twilight times.

Use cases

Plan outdoor photography around golden hour and blue hour.
Determine daylight hours for any location and date before traveling.
Calculate solar noon for accurate sundial or solar panel alignment.
Find sunrise/sunset for historical or future dates for research.
Plan hiking, camping, or sailing trips with accurate daylight windows.
Verify solar data for energy production estimates.
Check civil twilight times for aviation or maritime planning.
Compare day lengths across seasons or latitudes.

Frequently Asked Questions

Last updated: 2026-06-09 · Reviewed by Nham Vu