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