How accurate is the calculator?

Results are accurate to within about one minute for most locations and dates. The calculator uses the NOAA solar position algorithm; atmospheric refraction and elevation differences account for the small remaining error.

What is civil twilight?

Civil twilight is the period when the sun is between the horizon and 6 degrees below it. It is still light enough to work outdoors without artificial light.

Why does the page say the sun never rises or never sets?

At extreme latitudes around the summer and winter solstices, the sun can stay above the horizon for 24 hours (polar day) or below it for 24 hours (polar night). The calculator flags these cases.

Why is solar noon not exactly at 12:00?

Two reasons: the equation of time (up to ±17 minutes seasonal offset between mean and actual solar time), and your longitude offset from the centre of your timezone. Both are accounted for in the calculation.

Sunrise & Sunset

Calculator for sunrise, sunset, solar noon, civil twilight, and golden hour at any latitude, longitude, and date.

Latitude

Longitude

Date

Location: New York CityTimes shown in UTC

Sunrise

9:39 AM

Solar noon

5:02 PM

Sunset

12:24 AM

Civil dawn

9:07 AM

Civil dusk

12:56 AM

Day length

14 h 45 min

Golden hour

Approximate window when the sun is low enough for warm, directional light (sun below 6° altitude).

Morning

9:39 AM – 10:19 AM

Evening

11:44 PM – 12:24 AM

Quick locations

Countdown Timer

Set a timer for any duration. Get an alert when time is up.

Stopwatch

Precise stopwatch with lap tracking and millisecond accuracy.

Timezone Converter

Convert times between any IANA timezones with DST awareness.

Pomodoro Timer

Work in focused intervals with automatic break scheduling.

World Clock

Track the current time in multiple cities at a glance.

Unix Timestamp Converter

Convert Unix epoch timestamps to dates and back, in seconds or milliseconds.

Age Calculator

Calculate exact age in years, months, days, hours, and seconds.

Date Calculator

Add or subtract from a date, or measure the duration between two dates.

Interval Timer (HIIT)

Run work/rest intervals for HIIT, Tabata, and circuit workouts.

Alarm Clock

Set multiple alarms with labels, audio, and desktop notifications.

Meeting Planner

Find the best meeting time across timezones on a 24-hour overlap grid.

Chess Clock

Two-player chess clock with Fischer increment and Bronstein delay.

Golden hour

Quick locations

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