Jupiter will be setting during the evening in April, as a result only a few events are visible from New Zealand. Many of these will occur either while the sky is still fairly bright after sunset or when Jupiter is getting low, making them difficult to observe. Eclipses occur when a satellite moves through the shadow of Jupiter. As it moves into the shadow the satellite will gradually fade from view and disappear. When it comes out of the shadow a faint spot of light will appear and gradually brighten.
Occultations occur when a satellite moves behind Jupiter as seen from the Earth.
Hence during an occultation the satellite is hidden by the planet. Transits occur when a satellite moves across the face of Jupiter as seen from the Earth. Shadow transits occur when the shadow of the satellite cast by the Sun moves across the face of the planet Occultations always start at the western limb of Jupiter and end at the east. Transits always start at the eastern limb of the planet and end at the west. In general eclipse events take place when the satellite is a small distance away from Jupiter as seen from the Earth.