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Dev tools · August 12, 2026

Dynamic Sky

A living sky background for websites in vanilla JS

What it does

Most web “skies” are fake: a static gradient or a looping video. Dynamic Sky stands out by rendering a physically based day-to-night atmosphere from real time and location, including twilight and a night starfield, in vanilla JavaScript. Ship it with one script and two containers. The homepage is the proof — scrub time, compare cities, or pin time and change place.

A living atmosphere for the web. Scrub the day. Ship it in one script. Drop the sky into a product surface. Scrub time inside the frame. Locations stay pinned. One scrub moves time across all four skies. Time stays pinned. Change the place and the atmosphere follows. One script from jsDelivr. Two containers. The sky handles the rest. <script src="https://cdn.jsdelivr.net/gh/aakaashjois/dynamic-sky@main/dynamic-sky.js"></script> <div id="background-sky"></div> <div id="stars-container"></div> <script> const sky = new DynamicSky(); sky.init(); </script> Reference Short patterns for containers, time, location, and livefrom dynamic-sky.aakaashjois.com

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