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datetimeimages Get new date/time picker working, May 6, 2017
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scripts Rewrite a select/option bit that was confusing PWA chrome May 10, 2017
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README.md Remove quotes around Galilean May 7, 2017
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manifest.json

README.md

Galilean shows the four bright Galilean moons of Jupiter -- Io, Europa, Ganymede and Callisto -- and their shadows, along with the position of Jupiter's "great red spot" (GRS).

To see it in action: Galilean on Shallowsky.com. Here's a screenshot:

Galilean screenshot

Click for a bigger screenshot.

This is a "progressive web app", meaning that you should be able to install it to the home screen of Android or iOS phones and tablets. It doesn't collect data or need any funky permissions, and shouldn't need to use the network at all once you have the images downloaded.

It grew from my much older Java Jupiter page, but the Javascript version uses HTML, CSS and Javascript (and has nicer graphics).

Galilean (and its predecessor, Javascript Jupiter) is Copyright © 2000 - 2017 by Akkana Peck, licensed under the GNU Public License v.2 or later. Feel free to share it or modify it! If you do, I'd appreciate hearing what you did, and a link back to my site.

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