Jovian Satellites Events Calendar

Blue events occur at night and may be visible; turquoise events occur at twilight; yellow events occur in broad daylight and are invisible. Enter your own latitude and longitude to get the correct day and night determination for your area.

There is a single red event marking the current time. If it is not already on the page, you can jump to it from the link below.

The last two columns show the position of Jupiter. The altitude (Alt) is an angle between -90...90 and must be positive for Jupiter to be above the horizon. The azimuth (AZ) is counted in degrees clockwise from the North. 0 is North, 90 is East, 180 is South and 270 is West.

Number	Name
I	Io
II	Europa
III	Ganymede
IV	Callisto

Event	Description
EC-I,E	Eclipse by Jupiter's shadow Init, Exit
OC-I,E	Occultation by Jupiter Init, Exit
SH-I,E	Shadow transit Init, Exit
TR-I,E	Satellite Transit Init, Exit


 Year must be in range 2001...2003

This calendar uses data from the French Bureau des Longitudes for the Galilean satellites and NJSAS programs for Sun and Jupiter positions.