Sunclock: Sunrise Sunset Clock

Henning Benecke

Contains adsIn-app purchases

About this app

Sunclock is an astronomical clock that displays not only civil time but also the times of sunrise and sunset and the various phases of twilight. It thus provides you with an accurate picture of the natural course of the day.

However, the app offers more than just a display of the current time: it also allows you to measure time in various historical and cultural systems used in civilizations such as the Byzantine Empire, the Roman Empire, Judaism, and Islam. This gives you an insight into the different methods of measuring time used by different cultures, from the Horae Temporales to the Liturgy of the Hours to Zmanim and Salāt.

Sunclock is a useful tool for photographers. Based on your location and the date, it calculates the optimal lighting conditions, such as the golden and blue hours and twilight. This allows photographers to take advantage of the best lighting conditions for their shots.

The app also provides accurate times for moonrise, moonset, and moon phases. It also allows you to simulate celestial events, enabling precise observation of the night sky.

Sunclock is fully customizable and can be designed according to your individual preferences. There are various clock designs to choose from, including analog, digital, or zodiac styles. Colors and layouts can also be customized. The app offers a unique and flexible perception of time and can be used in different ways: as an interactive widget, as a live wallpaper, or as a standalone application.

Sunclock is the ideal solution for anyone interested in time, culture, and astronomy. The device features automatic or manual location detection and offers cross-platform support. Whether you are a photographer, history buff, spiritual seeker, or simply fascinated by the vastness of the cosmos, Sunclock helps you experience time in a whole new way.

Ratings and reviews

Excellent app. Can tell a lot of time was put into it. The amount of customizations are overwhelming which I love! If I can make one suggestion, it would be me if there was a way to put a marker on the outer number or marker dial for solar and a lunar noon. I know there's the culmination option but I would love just a marker on the numbers to make it more minimalist. Again, excellent app. Well done.

A must for outdoor work, recreation, gardening, hunting, etc. For anyone who works outside, this app is more valuable than any other clock or schedule. How many times have I had to figure out when the daylight would be enough to start work, or when the dew might burn off, or when I needed to start packing up. Twighlight & moonlight really do make a difference. Suggestion: a daylight-centric alarm would be a plus.

Without a doubt the best clock in the world! There is nothing even close. It can show all six kinds of twilight and even sundial correction on a hand of its own! Unbelievable! There is only one item on my wish list: An alternate hour-hand that can be set to UTC would make this perfect for ham radio use. I know I could set the clock to run on UTC time, but then I can't use the locality dependent astronomical features. Such a great job, you can be very proud indeed.

What’s new

10 Years of Sunclock!
To celebrate our 10th anniversary on December 24, 2025, we are releasing a maintenance update and sending a warm greeting to our community. Thank you for ten years of loyalty and support!
We wish you happy holidays.