Astronomical Clock
Astronomical Sun Clock showing true local solar time, the Sun, Moon, planets and brightest stars. See sunrise, sunset, day length and seasonal rhythms at a glance. Explore past and future skies. Free, ad-free and privacy-friendly. Installs to your home screen from any modern browser — no app store, no download; its manifest declares standalone display with a 512px icon, and its service worker caches assets for offline use. Submitted by its author and measured on 2026-08-11.
Astronomical Clock, as it opens in a browser tab.
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How to install Astronomical Clock as a PWA
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