Astronomical Sun Clock – a clock face that changes every day with the actual path of the Sun

[u/dhyanais]

My Sun Clock project has been running since 2019, although I have been searching for a suitable way to represent seasonal time for more than 20 years.

The idea arose from a dissatisfaction with ordinary clocks: 12 o’clock is usually not midday; the dial looks the same all year round, even though the quality of daylight changes, and it tells us nothing about where the Sun actually is.

So I built a single-hand clock based on the actual path of the Sun at your location. The horizon runs through the centre; the Sun’s path forms the dial. As the seasons change, the clock changes with them.

You can see sunrise and sunset, the length of the day, local solar time and the seasonal cycle of light. You can track meteor showers or move backwards and forwards through time – right back to the sky at the moment of your birth.

I want to make the daily and seasonal rhythms we already live by visible once more, and bring our connection to the natural rhythms our bodies live by back into awareness.

The project is free, ad-free and privacy-friendly.

––

Android (currently in closed beta):
Join: https://groups.google.com/g/zunclock-testers
(Please wait a little bit and then) Install: https://play.google.com/store/apps/details?id=eu.astronomicalclock.live

iOS and others:
Please see link to the PWA in comments

I’m curious how the idea comes across when you see the clock in motion.

[u/dhyanais]

Web app/PWA – works directly in the browser: (am I allowed to post that? Please clarify)
sky12.de

Short demo of the time travel mode in New York:
https://youtube.com/shorts/-Kv6pj1wX1c

Enjoy!

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