In a shadow event, the blue colored moon casting the shadow is seen on the left. In a transit event, the blue colored moon is passing in front of Jupiter's disk. Sometimes a shadow will accompany a transit, usually for the moon Io. In an occultation, the moon is moving behind Jupiter's disk, and will reappear later on the other side. Finally, in an eclipse, the moon passes behind Jupiter's shadow, much like an eclipse of the sun here on earth. The motion of the moon is exaggerated to show that it slowly fades instead of just winking out suddenly. This is because Jupiter has an atmosphere.
This image shows
the relative positions of the 4 Galilean moons when they Reappear from
eclipse. This event is the opposite of a disappearance; the moon slowly
fades back in, and is a very dramatic event to watch. In particular, eclipses
and occultations are one of the few ways you can actually see the
solar system in motion. Indeed, you can prove the Copernican theory with
your own eyes, just as Galileo did 400 years ago!
And now here are the tables, complete through May. Remember, these events are listed in Universal Time, so make sure you are up to speed. I stands for Io, II for Europa, III for Ganymede, and IV for Callisto. Don't forget your Jupiter Moons program, to quickly calculate where the moons are at any given time.
(Some information for this article taken from the Sky and Telescope February 2003 Issue, the S&T Website, and from the Jupiter Satellite Events Website.
May 1
II : Sha start: 1 May 2003 0:59
II : Tra end : 1 May 2003 1:19
II : Sha end : 1 May 2003 3:53
I : Occ start: 1 May 2003 10:15
I : Ecl end : 1 May 2003 13:50
May 2
I : Tra start: 2 May 2003 7:23
I : Sha start: 2 May 2003 8:39
I : Tra end : 2 May 2003 9:40
I : Sha end : 2 May 2003 10:57
II : Occ start: 2 May 2003 16:34
II : Ecl end : 2 May 2003 22:02
May 3
I : Occ start: 3 May 2003 4:44
I : Ecl end : 3 May 2003 8:18
III: Tra start: 3 May 2003 12:00
III: Tra end : 3 May 2003 15:38
III: Sha start: 3 May 2003 17:10
III: Sha end : 3 May 2003 20:49
May 4
I : Tra start: 4 May 2003 1:52
I : Sha start: 4 May 2003 3:08
I : Tra end : 4 May 2003 4:09
I : Sha end : 4 May 2003 5:26
II : Tra start: 4 May 2003 11:43
II : Sha start: 4 May 2003 14:17
II : Tra end : 4 May 2003 14:37
II : Sha end : 4 May 2003 17:11
I : Occ start: 4 May 2003 23:13
May 5
I : Ecl end : 5 May 2003 2:47
I : Tra start: 5 May 2003 20:20
I : Sha start: 5 May 2003 21:37
I : Tra end : 5 May 2003 22:38
I : Sha end : 5 May 2003 23:55
May 6
IV : Occ start: 6 May 2003 0:48
IV : Occ end : 6 May 2003 5:41
II : Occ start: 6 May 2003 5:53
II : Ecl end : 6 May 2003 11:21
IV : Ecl start: 6 May 2003 13:02
I : Occ start: 6 May 2003 17:41
IV : Ecl end : 6 May 2003 17:54
I : Ecl end : 6 May 2003 21:16
May 7
III: Occ start: 7 May 2003 2:09
III: Occ end : 7 May 2003 5:48
III: Ecl start: 7 May 2003 7:19
III: Ecl end : 7 May 2003 10:59
I : Tra start: 7 May 2003 14:49
I : Sha start: 7 May 2003 16:06
I : Tra end : 7 May 2003 17:07
I : Sha end : 7 May 2003 18:23
May 8
II : Tra start: 8 May 2003 1:02
II : Sha start: 8 May 2003 3:35
II : Tra end : 8 May 2003 3:56
II : Sha end : 8 May 2003 6:29
I : Occ start: 8 May 2003 12:10
I : Ecl end : 8 May 2003 15:45
May 9
I : Tra start: 9 May 2003 9:18
I : Sha start: 9 May 2003 10:35
I : Tra end : 9 May 2003 11:36
I : Sha end : 9 May 2003 12:52
II : Occ start: 9 May 2003 19:12
May 10
II : Ecl end : 10 May 2003 0:39
I : Occ start: 10 May 2003 6:40
I : Ecl end : 10 May 2003 10:13
III: Tra start: 10 May 2003 16:04
III: Tra end : 10 May 2003 19:42
III: Sha start: 10 May 2003 21:10
May 11
III: Sha end : 11 May 2003 0:49
I : Tra start: 11 May 2003 3:48
I : Sha start: 11 May 2003 5:03
I : Tra end : 11 May 2003 6:05
I : Sha end : 11 May 2003 7:21
II : Tra start: 11 May 2003 14:21
II : Sha start: 11 May 2003 16:53
II : Tra end : 11 May 2003 17:15
II : Sha end : 11 May 2003 19:47
May 12
I : Occ start: 12 May 2003 1:09
I : Ecl end : 12 May 2003 4:42
I : Tra start: 12 May 2003 22:17
I : Sha start: 12 May 2003 23:32
May 13
I : Tra end : 13 May 2003 0:34
I : Sha end : 13 May 2003 1:50
II : Occ start: 13 May 2003 8:32
II : Ecl end : 13 May 2003 13:57
I : Occ start: 13 May 2003 19:38
I : Ecl end : 13 May 2003 23:11
May 14
III: Occ start: 14 May 2003 6:14
III: Occ end : 14 May 2003 9:53
III: Ecl start: 14 May 2003 11:19
IV : Tra start: 14 May 2003 11:24
III: Ecl end : 14 May 2003 14:59
IV : Tra end : 14 May 2003 16:15
I : Tra start: 14 May 2003 16:46
I : Sha start: 14 May 2003 18:01
I : Tra end : 14 May 2003 19:03
I : Sha end : 14 May 2003 20:19
IV : Sha start: 14 May 2003 23:09
May 15
II : Tra start: 15 May 2003 3:41
IV : Sha end : 15 May 2003 3:57
II : Sha start: 15 May 2003 6:11
II : Tra end : 15 May 2003 6:35
II : Sha end : 15 May 2003 9:05
I : Occ start: 15 May 2003 14:07
I : Ecl end : 15 May 2003 17:40
May 16
I : Tra start: 16 May 2003 11:15
I : Sha start: 16 May 2003 12:30
I : Tra end : 16 May 2003 13:33
I : Sha end : 16 May 2003 14:47
II : Occ start: 16 May 2003 21:51
May 17
II : Ecl end : 17 May 2003 3:15
I : Occ start: 17 May 2003 8:36
I : Ecl end : 17 May 2003 12:08
III: Tra start: 17 May 2003 20:10
III: Tra end : 17 May 2003 23:49
May 18
III: Sha start: 18 May 2003 1:10
III: Sha end : 18 May 2003 4:49
I : Tra start: 18 May 2003 5:44
I : Sha start: 18 May 2003 6:59
I : Tra end : 18 May 2003 8:02
I : Sha end : 18 May 2003 9:16
II : Tra start: 18 May 2003 17:01
II : Sha start: 18 May 2003 19:29
II : Tra end : 18 May 2003 19:55
II : Sha end : 18 May 2003 22:23
May 19
I : Occ start: 19 May 2003 3:06
I : Ecl end : 19 May 2003 6:37
May 20
I : Tra start: 20 May 2003 0:14
I : Sha start: 20 May 2003 1:27
I : Tra end : 20 May 2003 2:31
I : Sha end : 20 May 2003 3:45
II : Occ start: 20 May 2003 11:12
II : Ecl end : 20 May 2003 16:34
I : Occ start: 20 May 2003 21:35
May 21
I : Ecl end : 21 May 2003 1:06
III: Occ start: 21 May 2003 10:22
III: Occ end : 21 May 2003 14:01
III: Ecl start: 21 May 2003 15:18
I : Tra start: 21 May 2003 18:43
III: Ecl end : 21 May 2003 18:58
I : Sha start: 21 May 2003 19:56
I : Tra end : 21 May 2003 21:01
I : Sha end : 21 May 2003 22:14
May 22
II : Tra start: 22 May 2003 6:22
II : Sha start: 22 May 2003 8:47
II : Tra end : 22 May 2003 9:15
II : Sha end : 22 May 2003 11:41
I : Occ start: 22 May 2003 16:04
IV : Occ start: 22 May 2003 19:30
I : Ecl end : 22 May 2003 19:35
May 23
IV : Occ end : 23 May 2003 0:24
IV : Ecl start: 23 May 2003 7:06
IV : Ecl end : 23 May 2003 11:56
I : Tra start: 23 May 2003 13:12
I : Sha start: 23 May 2003 14:25
I : Tra end : 23 May 2003 15:30
I : Sha end : 23 May 2003 16:43
May 24
II : Occ start: 24 May 2003 0:32
II : Ecl end : 24 May 2003 5:52
I : Occ start: 24 May 2003 10:34
I : Ecl end : 24 May 2003 14:03
May 25
III: Tra start: 25 May 2003 0:20
III: Tra end : 25 May 2003 3:59
III: Sha start: 25 May 2003 5:10
I : Tra start: 25 May 2003 7:42
III: Sha end : 25 May 2003 8:49
I : Sha start: 25 May 2003 8:54
I : Tra end : 25 May 2003 10:00
I : Sha end : 25 May 2003 11:11
II : Tra start: 25 May 2003 19:42
II : Sha start: 25 May 2003 22:05
II : Tra end : 25 May 2003 22:36
May 26
II : Sha end : 26 May 2003 0:58
I : Occ start: 26 May 2003 5:03
I : Ecl end : 26 May 2003 8:32
May 27
I : Tra start: 27 May 2003 2:11
I : Sha start: 27 May 2003 3:22
I : Tra end : 27 May 2003 4:29
I : Sha end : 27 May 2003 5:40
II : Occ start: 27 May 2003 13:54
II : Ecl end : 27 May 2003 19:11
I : Occ start: 27 May 2003 23:33
May 28
I : Ecl end : 28 May 2003 3:01
III: Occ start: 28 May 2003 14:33
III: Occ end : 28 May 2003 18:12
III: Ecl start: 28 May 2003 19:17
I : Tra start: 28 May 2003 20:41
I : Sha start: 28 May 2003 21:51
III: Ecl end : 28 May 2003 22:57
I : Tra end : 28 May 2003 22:59