Jupiter's moons in September 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 |
|---|---|---|
| Sep 1 01:08 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 1 03:50 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 1 22:19 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 1 22:47 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 2 00:34 UTC | Io's transit endstakes 4 min | — |
| Sep 2 01:00 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 2 14:17 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Sep 2 17:52 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Sep 2 19:39 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 2 22:19 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 3 16:49 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 3 17:16 UTC | Io's shadow enters the disctakes 6 min | — |
| Sep 3 19:04 UTC | Io's transit endstakes 4 min | — |
| Sep 3 19:29 UTC | Io's shadow leaves the disctakes 2 min | — |
| Sep 3 23:28 UTC | Ganymede disappears behind Jupitertakes 10 min | — |
| Sep 4 04:04 UTC | Ganymede reappears from Jupiter's shadowtakes 11 min | — |
| Sep 4 09:20 UTC | Europa begins its transit across the disctakes 4 min | — |
| Sep 4 10:12 UTC | Europa's shadow enters the disctakes 6 min | — |
| Sep 4 12:00 UTC | Europa's transit endstakes 4 min | — |
| Sep 4 12:48 UTC | Europa's shadow leaves the disctakes 5 min | — |
| Sep 4 14:09 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 4 16:47 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 5 11:19 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 5 11:44 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 5 13:34 UTC | Io's transit endstakes 4 min | — |
| Sep 5 13:58 UTC | Io's shadow leaves the disctakes 5 min | — |
| Sep 6 03:42 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Sep 6 07:10 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Sep 6 08:39 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 6 11:16 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 7 05:50 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 7 06:13 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 7 08:05 UTC | Io's transit endstakes 4 min | — |
| Sep 7 08:27 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 7 13:35 UTC | Ganymede begins its transit across the disctakes 10 min | — |
| Sep 7 15:13 UTC | Ganymede's shadow enters the disctakes 13 min | — |
| Sep 7 15:36 UTC | Callisto begins its transit across the disctakes 38 min | — |
| Sep 7 16:35 UTC | Ganymede's transit endstakes 10 min | — |
| Sep 7 16:57 UTC | Callisto's transit endstakes 38 min | — |
| Sep 7 17:56 UTC | Ganymede's shadow leaves the disctakes 12 min | — |
| Sep 7 22:43 UTC | Europa begins its transit across the disctakes 4 min | — |
| Sep 7 23:29 UTC | Europa's shadow enters the disctakes 3 min | — |
| Sep 8 01:23 UTC | Europa's transit endstakes 4 min | — |
| Sep 8 02:05 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Sep 8 03:09 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 8 05:44 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 9 00:20 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 9 00:42 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 9 02:35 UTC | Io's transit endstakes 4 min | — |
| Sep 9 02:55 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 9 17:08 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Sep 9 20:29 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Sep 9 21:39 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 10 00:13 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 10 18:50 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 10 19:10 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 10 21:05 UTC | Io's transit endstakes 4 min | — |
| Sep 10 21:24 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 11 03:56 UTC | Ganymede disappears behind Jupitertakes 10 min | — |
| Sep 11 08:02 UTC | Ganymede reappears from Jupiter's shadowtakes 11 min | — |
| Sep 11 12:07 UTC | Europa begins its transit across the disctakes 4 min | — |
| Sep 11 12:46 UTC | Europa's shadow enters the disctakes 3 min | — |
| Sep 11 14:47 UTC | Europa's transit endstakes 4 min | — |
| Sep 11 15:22 UTC | Europa's shadow leaves the disctakes 5 min | — |
| Sep 11 16:10 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 11 18:41 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 12 13:21 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 12 13:39 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 12 15:36 UTC | Io's transit endstakes 4 min | — |
| Sep 12 15:53 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 13 06:33 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Sep 13 09:46 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Sep 13 10:40 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 13 13:10 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 14 07:51 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 14 08:08 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 14 10:06 UTC | Io's transit endstakes 4 min | — |
| Sep 14 10:21 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 14 18:02 UTC | Ganymede begins its transit across the disctakes 10 min | — |
| Sep 14 19:11 UTC | Ganymede's shadow enters the disctakes 12 min | — |
| Sep 14 20:59 UTC | Ganymede's transit endstakes 10 min | — |
| Sep 14 21:54 UTC | Ganymede's shadow leaves the disctakes 12 min | — |
| Sep 15 01:31 UTC | Europa begins its transit across the disctakes 4 min | — |
| Sep 15 02:03 UTC | Europa's shadow enters the disctakes 6 min | — |
| Sep 15 04:11 UTC | Europa's transit endstakes 4 min | — |
| Sep 15 04:39 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Sep 15 05:10 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 15 07:38 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 16 01:49 UTC | Callisto disappears behind Jupiter | — |
| Sep 16 02:21 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 16 02:36 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 16 03:22 UTC | Callisto reappears from behind Jupiter | — |
| Sep 16 04:36 UTC | Io's transit endstakes 4 min | — |
| Sep 16 04:50 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 16 19:59 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Sep 16 23:05 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Sep 16 23:40 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 17 02:07 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 17 20:52 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 17 21:05 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 17 23:07 UTC | Io's transit endstakes 4 min | — |
| Sep 17 23:19 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 18 08:23 UTC | Ganymede disappears behind Jupitertakes 10 min | — |
| Sep 18 11:59 UTC | Ganymede reappears from Jupiter's shadowtakes 11 min | — |
| Sep 18 14:55 UTC | Europa begins its transit across the disctakes 4 min | — |
| Sep 18 15:20 UTC | Europa's shadow enters the disctakes 3 min | — |
| Sep 18 17:35 UTC | Europa's transit endstakes 4 min | — |
| Sep 18 17:56 UTC | Europa's shadow leaves the disctakes 5 min | — |
| Sep 18 18:11 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 18 20:35 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 19 15:22 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 19 15:34 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 19 17:37 UTC | Io's transit endstakes 4 min | — |
| Sep 19 17:47 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 20 09:24 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Sep 20 12:23 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Sep 20 12:41 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 20 15:04 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 21 09:53 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 21 10:02 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 21 12:07 UTC | Io's transit endstakes 4 min | — |
| Sep 21 12:16 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 21 22:30 UTC | Ganymede begins its transit across the disctakes 10 min | — |
| Sep 21 23:10 UTC | Ganymede's shadow enters the disctakes 9 min | — |
| Sep 22 01:25 UTC | Ganymede's transit endstakes 10 min | — |
| Sep 22 01:54 UTC | Ganymede's shadow leaves the disctakes 10 min | — |
| Sep 22 04:19 UTC | Europa begins its transit across the disctakes 4 min | — |
| Sep 22 04:37 UTC | Europa's shadow enters the disctakes 6 min | — |
| Sep 22 06:58 UTC | Europa's transit endstakes 4 min | — |
| Sep 22 07:11 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 22 07:13 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Sep 22 09:32 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 23 04:23 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 23 04:31 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 23 06:38 UTC | Io's transit endstakes 4 min | — |
| Sep 23 06:45 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 23 22:50 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Sep 24 01:41 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 24 01:42 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Sep 24 04:00 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 24 12:27 UTC | Callisto begins its transit across the disc | — |
| Sep 24 13:43 UTC | Callisto's transit ends | — |
| Sep 24 22:53 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 24 22:59 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 25 01:08 UTC | Io's transit endstakes 4 min | — |
| Sep 25 01:13 UTC | Io's shadow leaves the disctakes 4 min | — |
| Sep 25 12:51 UTC | Ganymede disappears behind Jupitertakes 11 min | — |
| Sep 25 15:57 UTC | Ganymede reappears from Jupiter's shadowtakes 11 min | — |
| Sep 25 17:43 UTC | Europa begins its transit across the disctakes 4 min | — |
| Sep 25 17:54 UTC | Europa's shadow enters the disctakes 3 min | — |
| Sep 25 20:11 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 25 20:22 UTC | Europa's transit endstakes 4 min | — |
| Sep 25 20:30 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Sep 25 22:29 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 26 17:24 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 26 17:28 UTC | Io's shadow enters the disctakes 5 min | — |
| Sep 26 19:38 UTC | Io's transit endstakes 4 min | — |
| Sep 26 19:42 UTC | Io's shadow leaves the disctakes 3 min | — |
| Sep 27 12:15 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Sep 27 14:42 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 27 15:00 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Sep 27 16:57 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 28 11:54 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 28 11:57 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 28 14:09 UTC | Io's transit endstakes 4 min | — |
| Sep 28 14:11 UTC | Io's shadow leaves the disctakes 3 min | — |
| Sep 29 02:58 UTC | Ganymede begins its transit across the disctakes 11 min | — |
| Sep 29 03:09 UTC | Ganymede's shadow enters the disctakes 13 min | — |
| Sep 29 05:51 UTC | Ganymede's transit endstakes 11 min | — |
| Sep 29 05:52 UTC | Ganymede's shadow leaves the disctakes 9 min | — |
| Sep 29 07:07 UTC | Europa begins its transit across the disctakes 4 min | — |
| Sep 29 07:11 UTC | Europa's shadow enters the disctakes 3 min | — |
| Sep 29 09:12 UTC | Io disappears behind Jupitertakes 4 min | — |
| Sep 29 09:46 UTC | Europa's transit endstakes 4 min | — |
| Sep 29 09:47 UTC | Europa's shadow leaves the disctakes 3 min | — |
| Sep 29 11:26 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Sep 30 06:25 UTC | Io begins its transit across the disctakes 4 min | — |
| Sep 30 06:25 UTC | Io's shadow enters the disctakes 3 min | — |
| Sep 30 08:39 UTC | Io's transit endstakes 4 min | — |
| Sep 30 08:39 UTC | Io's shadow leaves the disctakes 3 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.