Jupiter's moons in October 2028
Io · Europa · Ganymede · Callisto — eclipses, occultations, transits, shadows
Jupiter's four big moons put on a show every night: they slip behind the planet and into its shadow, cross its face, and drag their shadows across the cloud tops. Any telescope shows it. Times are for the whole Earth; pick a location and the list keeps only what your sky shows.
| When (UTC) | Event | Jupiter in your sky |
|---|---|---|
| Oct 1 01:41 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Oct 1 03:42 UTC | Io disappears behind Jupitertakes 4 min | — |
| Oct 1 04:22 UTC | Europa reappears from behind Jupitertakes 4 min | — |
| Oct 1 05:56 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 2 00:54 UTC | Io's shadow enters the disctakes 6 min | — |
| Oct 2 00:55 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 2 03:08 UTC | Io's shadow leaves the disctakes 4 min | — |
| Oct 2 03:10 UTC | Io's transit endstakes 4 min | — |
| Oct 2 17:17 UTC | Ganymede disappears into Jupiter's shadowtakes 12 min | — |
| Oct 2 20:11 UTC | Ganymede reappears from behind Jupitertakes 11 min | — |
| Oct 2 20:28 UTC | Europa's shadow enters the disctakes 4 min | — |
| Oct 2 20:31 UTC | Europa begins its transit across the disctakes 4 min | — |
| Oct 2 22:10 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 2 23:04 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Oct 2 23:09 UTC | Europa's transit endstakes 4 min | — |
| Oct 3 00:26 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 3 19:22 UTC | Io's shadow enters the disctakes 3 min | — |
| Oct 3 19:25 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 3 21:36 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 3 21:40 UTC | Io's transit endstakes 4 min | — |
| Oct 4 15:00 UTC | Europa disappears into Jupiter's shadowtakes 4 min | — |
| Oct 4 16:39 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 4 17:47 UTC | Europa reappears from behind Jupitertakes 4 min | — |
| Oct 4 18:56 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 5 13:51 UTC | Io's shadow enters the disctakes 4 min | — |
| Oct 5 13:56 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 5 16:05 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 5 16:10 UTC | Io's transit endstakes 4 min | — |
| Oct 6 07:08 UTC | Ganymede's shadow enters the disctakes 13 min | — |
| Oct 6 07:28 UTC | Ganymede begins its transit across the disctakes 11 min | — |
| Oct 6 09:45 UTC | Europa's shadow enters the disctakes 4 min | — |
| Oct 6 09:50 UTC | Ganymede's shadow leaves the disctakes 10 min | — |
| Oct 6 09:55 UTC | Europa begins its transit across the disctakes 4 min | — |
| Oct 6 10:17 UTC | Ganymede's transit endstakes 11 min | — |
| Oct 6 11:07 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 6 12:21 UTC | Europa's shadow leaves the disctakes 3 min | — |
| Oct 6 12:33 UTC | Europa's transit endstakes 4 min | — |
| Oct 6 13:26 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 7 08:20 UTC | Io's shadow enters the disctakes 6 min | — |
| Oct 7 08:26 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 7 10:33 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 7 10:40 UTC | Io's transit endstakes 4 min | — |
| Oct 8 04:19 UTC | Europa disappears into Jupiter's shadowtakes 4 min | — |
| Oct 8 05:36 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 8 07:13 UTC | Europa reappears from behind Jupitertakes 4 min | — |
| Oct 8 07:56 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 9 02:48 UTC | Io's shadow enters the disctakes 4 min | — |
| Oct 9 02:57 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 9 05:02 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 9 05:11 UTC | Io's transit endstakes 4 min | — |
| Oct 9 21:14 UTC | Ganymede disappears into Jupiter's shadowtakes 12 min | — |
| Oct 9 23:02 UTC | Europa's shadow enters the disctakes 6 min | — |
| Oct 9 23:19 UTC | Europa begins its transit across the disctakes 4 min | — |
| Oct 10 00:04 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 10 00:35 UTC | Ganymede reappears from behind Jupitertakes 11 min | — |
| Oct 10 01:37 UTC | Europa's shadow leaves the disctakes 3 min | — |
| Oct 10 01:57 UTC | Europa's transit endstakes 4 min | — |
| Oct 10 02:26 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 10 21:17 UTC | Io's shadow enters the disctakes 4 min | — |
| Oct 10 21:27 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 10 23:31 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 10 23:41 UTC | Io's transit endstakes 4 min | — |
| Oct 11 17:37 UTC | Europa disappears into Jupiter's shadowtakes 4 min | — |
| Oct 11 18:33 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 11 20:38 UTC | Europa reappears from behind Jupitertakes 4 min | — |
| Oct 11 20:56 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 12 15:45 UTC | Io's shadow enters the disctakes 6 min | — |
| Oct 12 15:57 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 12 17:59 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 12 18:11 UTC | Io's transit endstakes 4 min | — |
| Oct 13 11:07 UTC | Ganymede's shadow enters the disctakes 13 min | — |
| Oct 13 11:56 UTC | Ganymede begins its transit across the disctakes 11 min | — |
| Oct 13 12:18 UTC | Europa's shadow enters the disctakes 4 min | — |
| Oct 13 12:43 UTC | Europa begins its transit across the disctakes 4 min | — |
| Oct 13 13:01 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 13 13:46 UTC | Ganymede's shadow leaves the disctakes 11 min | — |
| Oct 13 14:42 UTC | Ganymede's transit endstakes 11 min | — |
| Oct 13 14:54 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Oct 13 15:20 UTC | Europa's transit endstakes 4 min | — |
| Oct 13 15:26 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 14 10:14 UTC | Io's shadow enters the disctakes 4 min | — |
| Oct 14 10:27 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 14 12:28 UTC | Io's shadow leaves the disctakes 4 min | — |
| Oct 14 12:42 UTC | Io's transit endstakes 4 min | — |
| Oct 15 06:55 UTC | Europa disappears into Jupiter's shadowtakes 4 min | — |
| Oct 15 07:29 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 15 09:57 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 15 10:03 UTC | Europa reappears from behind Jupitertakes 4 min | — |
| Oct 16 04:42 UTC | Io's shadow enters the disctakes 4 min | — |
| Oct 16 04:58 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 16 06:56 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 16 07:12 UTC | Io's transit endstakes 4 min | — |
| Oct 17 01:13 UTC | Ganymede disappears into Jupiter's shadowtakes 12 min | — |
| Oct 17 01:35 UTC | Europa's shadow enters the disctakes 6 min | — |
| Oct 17 01:58 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 17 02:07 UTC | Europa begins its transit across the disctakes 4 min | — |
| Oct 17 04:11 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Oct 17 04:27 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 17 04:44 UTC | Europa's transit endstakes 4 min | — |
| Oct 17 05:00 UTC | Ganymede reappears from behind Jupitertakes 11 min | — |
| Oct 17 23:11 UTC | Io's shadow enters the disctakes 4 min | — |
| Oct 17 23:28 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 18 01:25 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 18 01:42 UTC | Io's transit endstakes 4 min | — |
| Oct 18 20:13 UTC | Europa disappears into Jupiter's shadowtakes 4 min | — |
| Oct 18 20:26 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 18 22:57 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 18 23:28 UTC | Europa reappears from behind Jupitertakes 4 min | — |
| Oct 19 17:40 UTC | Io's shadow enters the disctakes 4 min | — |
| Oct 19 17:58 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 19 19:53 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 19 20:12 UTC | Io's transit endstakes 4 min | — |
| Oct 20 14:52 UTC | Europa's shadow enters the disctakes 4 min | — |
| Oct 20 14:54 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 20 15:05 UTC | Ganymede's shadow enters the disctakes 14 min | — |
| Oct 20 15:30 UTC | Europa begins its transit across the disctakes 4 min | — |
| Oct 20 16:23 UTC | Ganymede begins its transit across the disctakes 11 min | — |
| Oct 20 17:27 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 20 17:27 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Oct 20 17:44 UTC | Ganymede's shadow leaves the disctakes 11 min | — |
| Oct 20 18:07 UTC | Europa's transit endstakes 4 min | — |
| Oct 20 19:07 UTC | Ganymede's transit endstakes 11 min | — |
| Oct 21 12:08 UTC | Io's shadow enters the disctakes 4 min | — |
| Oct 21 12:29 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 21 14:22 UTC | Io's shadow leaves the disctakes 4 min | — |
| Oct 21 14:43 UTC | Io's transit endstakes 4 min | — |
| Oct 22 09:23 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 22 09:32 UTC | Europa disappears into Jupiter's shadowtakes 4 min | — |
| Oct 22 11:57 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 22 12:54 UTC | Europa reappears from behind Jupitertakes 4 min | — |
| Oct 23 06:37 UTC | Io's shadow enters the disctakes 4 min | — |
| Oct 23 06:59 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 23 08:50 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 23 09:13 UTC | Io's transit endstakes 4 min | — |
| Oct 24 03:51 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 24 04:09 UTC | Europa's shadow enters the disctakes 7 min | — |
| Oct 24 04:54 UTC | Europa begins its transit across the disctakes 4 min | — |
| Oct 24 05:11 UTC | Ganymede disappears into Jupiter's shadowtakes 12 min | — |
| Oct 24 06:27 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 24 06:44 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Oct 24 07:30 UTC | Europa's transit endstakes 4 min | — |
| Oct 24 09:24 UTC | Ganymede reappears from behind Jupitertakes 11 min | — |
| Oct 25 01:05 UTC | Io's shadow enters the disctakes 6 min | — |
| Oct 25 01:29 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 25 03:19 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 25 03:43 UTC | Io's transit endstakes 4 min | — |
| Oct 25 22:19 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 25 22:50 UTC | Europa disappears into Jupiter's shadowtakes 4 min | — |
| Oct 26 00:57 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 26 02:18 UTC | Europa reappears from behind Jupitertakes 4 min | — |
| Oct 26 19:36 UTC | Io's shadow enters the disctakes 2 min | — |
| Oct 26 20:00 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 26 21:47 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 26 22:13 UTC | Io's transit endstakes 4 min | — |
| Oct 27 16:48 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 27 17:28 UTC | Europa's shadow enters the disctakes 2 min | — |
| Oct 27 18:17 UTC | Europa begins its transit across the disctakes 4 min | — |
| Oct 27 19:03 UTC | Ganymede's shadow enters the disctakes 14 min | — |
| Oct 27 19:27 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 27 20:01 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Oct 27 20:50 UTC | Ganymede begins its transit across the disctakes 11 min | — |
| Oct 27 20:53 UTC | Europa's transit endstakes 4 min | — |
| Oct 27 21:40 UTC | Ganymede's shadow leaves the disctakes 11 min | — |
| Oct 27 23:30 UTC | Ganymede's transit endstakes 11 min | — |
| Oct 28 14:02 UTC | Io's shadow enters the disctakes 4 min | — |
| Oct 28 14:30 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 28 16:16 UTC | Io's shadow leaves the disctakes 4 min | — |
| Oct 28 16:43 UTC | Io's transit endstakes 4 min | — |
| Oct 29 11:16 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 29 12:08 UTC | Europa disappears into Jupiter's shadowtakes 4 min | — |
| Oct 29 13:57 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 29 15:44 UTC | Europa reappears from behind Jupitertakes 4 min | — |
| Oct 30 08:31 UTC | Io's shadow enters the disctakes 7 min | — |
| Oct 30 09:00 UTC | Io begins its transit across the disctakes 4 min | — |
| Oct 30 10:44 UTC | Io's shadow leaves the disctakes 3 min | — |
| Oct 30 11:14 UTC | Io's transit endstakes 4 min | — |
| Oct 31 05:45 UTC | Io disappears into Jupiter's shadowtakes 4 min | — |
| Oct 31 06:42 UTC | Europa's shadow enters the disctakes 8 min | — |
| Oct 31 07:41 UTC | Europa begins its transit across the disctakes 4 min | — |
| Oct 31 08:27 UTC | Io reappears from behind Jupitertakes 4 min | — |
| Oct 31 09:10 UTC | Ganymede disappears into Jupiter's shadowtakes 12 min | — |
| Oct 31 09:17 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Oct 31 10:16 UTC | Europa's transit endstakes 4 min | — |
| Oct 31 13:48 UTC | Ganymede reappears from behind Jupitertakes 12 min | — |
Reading the list
Each disappears / reappears line is the moment the moon's disc is fully in or first out; the "takes N min" is how long the disc takes to cross the edge. Halves that happen behind Jupiter or inside its shadow are left out, since nobody can see them. Positions are from JPL DE431 and the jup365 satellite ephemeris, Jupiter as an oblate spheroid with its shadow cone; mutual-event magnitude drops assume uniform discs and are estimates. Events are geocentric — the same instant everywhere on Earth to well under a second.