Position of Jupiter's Galilean Moons
Using this application it is possible to compute and visualize the positions of Io, Europa, Ganymede, Callisto - also known as the Galilean Satellites of Jupiter - in real time or at any given time in the past and in the future.
Date:
Time: Europe/London

Keep Jupiter at the Center
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Direct view is presenting the image as it would be seen through a binocular or any other erect-image system.
Inverted view is typically provided by a Newtonian reflector telescope.
Mirrored view is presenting the image as it would be seen through a Schmidt–Cassegrain/Maksutov/Refractor telescope with a diagonal adapter.
Credits
The algorithms to compute the positions of the Galilean Moons used in this application are based on the jsaa project (Javascript Implementation of Astronomical Algorithms) which, in turn, is based on algorithms published by Jean Meeus on his Astronomical Algorithms book.