What to See & When

Here you can find information on;

  • Today's weather forecast for Guernsey
  • Monthly highlights with Sky Charts to help you visualise what celestial bodies are visible
  • Yearly information on the sun, moon, planets and meteors
  • A glossary of astronomical terms used in the various pages

Sky Charts generated by Sky Safari, Simulation Curriculum Corp.

Great Red Spot & Galilean Moons of Jupiter

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).

The webapp on this page is derived from the GitHub repositority akkana/galilean and website shallowsky.com. It has been adapted to work within the Grav CMS framework.

jupiter grs shadow0 shadow1 shadow2 shadow3 moon0 moon1 moon2 moon3 I E G C I E G C I E G C GRS
(100 msec)
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