Jupiter's moons in June 2027
Io · Europa · Ganymede · Callisto — eclipses, occultations, transits, shadows, and 2 mutual events
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. This is a mutual-event season — every six years the moons' orbits turn edge-on to the Sun and they eclipse and occult each other. 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 |
|---|---|---|
| Jun 1 12:21 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 1 13:33 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 1 14:39 UTC | Io's transit endstakes 4 min | — |
| Jun 1 15:48 UTC | Io's shadow leaves the disctakes 7 min | — |
| Jun 2 01:48 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Jun 2 07:05 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Jun 2 09:42 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 2 13:10 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 3 05:50 UTC | Ganymede disappears behind Jupitertakes 8 min | — |
| Jun 3 06:50 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 3 08:02 UTC | Io's shadow enters the disctakes 6 min | — |
| Jun 3 09:09 UTC | Io's transit endstakes 4 min | — |
| Jun 3 09:30 UTC | Ganymede reappears from behind Jupitertakes 8 min | — |
| Jun 3 10:17 UTC | Io's shadow leaves the disctakes 4 min | — |
| Jun 3 10:42 UTC | Ganymede disappears into Jupiter's shadowtakes 8 min | — |
| Jun 3 14:16 UTC | Ganymede reappears from Jupiter's shadowtakes 8 min | — |
| Jun 3 20:56 UTC | Europa begins its transit across the disctakes 4 min | — |
| Jun 3 23:18 UTC | Europa's shadow enters the disctakes 6 min | — |
| Jun 3 23:47 UTC | Europa's transit endstakes 4 min | — |
| Jun 4 02:04 UTC | Europa's shadow leaves the disctakes 8 min | — |
| Jun 4 04:11 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 4 07:39 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 4 15:39 UTC | Callisto disappears behind Jupitertakes 10 min | — |
| Jun 4 20:28 UTC | Callisto reappears from behind Jupitertakes 10 min | — |
| Jun 5 01:20 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 5 02:31 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 5 03:08 UTC | Callisto disappears into Jupiter's shadowtakes 11 min | — |
| Jun 5 03:38 UTC | Io's transit endstakes 4 min | — |
| Jun 5 04:46 UTC | Io's shadow leaves the disctakes 7 min | — |
| Jun 5 07:31 UTC | Callisto reappears from Jupiter's shadowtakes 11 min | — |
| Jun 5 15:09 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Jun 5 20:24 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Jun 5 22:40 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 6 02:08 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 6 10:45 UTC | Ganymede occults Io13.0 min · 37% of Io covered · drops ≈0.2 mag | — |
| Jun 6 19:20 UTC | Ganymede occults Io22.5 min · 71% of Io covered · drops ≈0.4 mag | — |
| Jun 6 19:49 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 6 19:58 UTC | Ganymede begins its transit across the disctakes 8 min | — |
| Jun 6 21:00 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 6 22:08 UTC | Io's transit endstakes 4 min | — |
| Jun 6 23:15 UTC | Io's shadow leaves the disctakes 7 min | — |
| Jun 6 23:37 UTC | Ganymede's transit endstakes 8 min | — |
| Jun 7 00:42 UTC | Ganymede's shadow enters the disctakes 10 min | — |
| Jun 7 04:12 UTC | Ganymede's shadow leaves the disctakes 8 min | — |
| Jun 7 04:21 UTC | Ganymede's shadow enters the disc | — |
| Jun 7 04:25 UTC | Ganymede's shadow leaves the disc | — |
| Jun 7 10:17 UTC | Europa begins its transit across the disctakes 4 min | — |
| Jun 7 12:36 UTC | Europa's shadow enters the disctakes 6 min | — |
| Jun 7 13:08 UTC | Europa's transit endstakes 4 min | — |
| Jun 7 15:22 UTC | Europa's shadow leaves the disctakes 7 min | — |
| Jun 7 17:10 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 7 20:36 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 8 14:19 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 8 15:28 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 8 16:37 UTC | Io's transit endstakes 4 min | — |
| Jun 8 17:43 UTC | Io's shadow leaves the disctakes 4 min | — |
| Jun 9 04:31 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Jun 9 09:42 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Jun 9 11:40 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 9 15:05 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 10 08:49 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 10 09:57 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 10 10:02 UTC | Ganymede disappears behind Jupitertakes 8 min | — |
| Jun 10 11:07 UTC | Io's transit endstakes 4 min | — |
| Jun 10 12:12 UTC | Io's shadow leaves the disctakes 7 min | — |
| Jun 10 13:42 UTC | Ganymede reappears from behind Jupitertakes 8 min | — |
| Jun 10 14:42 UTC | Ganymede disappears into Jupiter's shadowtakes 8 min | — |
| Jun 10 18:15 UTC | Ganymede reappears from Jupiter's shadowtakes 8 min | — |
| Jun 10 23:38 UTC | Europa begins its transit across the disctakes 4 min | — |
| Jun 11 01:53 UTC | Europa's shadow enters the disctakes 3 min | — |
| Jun 11 02:29 UTC | Europa's transit endstakes 4 min | — |
| Jun 11 04:39 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Jun 11 06:09 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 11 09:34 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 12 03:18 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 12 04:26 UTC | Io's shadow enters the disctakes 6 min | — |
| Jun 12 05:37 UTC | Io's transit endstakes 4 min | — |
| Jun 12 06:41 UTC | Io's shadow leaves the disctakes 4 min | — |
| Jun 12 17:53 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Jun 12 23:01 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Jun 13 00:39 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 13 02:45 UTC | Callisto begins its transit across the disctakes 10 min | — |
| Jun 13 04:02 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 13 07:29 UTC | Callisto's transit endstakes 10 min | — |
| Jun 13 13:18 UTC | Callisto's shadow enters the disctakes 11 min | — |
| Jun 13 17:38 UTC | Callisto's shadow leaves the disctakes 9 min | — |
| Jun 13 17:49 UTC | Callisto's shadow enters the disc | — |
| Jun 13 17:54 UTC | Callisto's shadow leaves the disc | — |
| Jun 13 21:48 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 13 22:55 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 14 00:06 UTC | Io's transit endstakes 4 min | — |
| Jun 14 00:12 UTC | Ganymede begins its transit across the disctakes 8 min | — |
| Jun 14 01:10 UTC | Io's shadow leaves the disctakes 7 min | — |
| Jun 14 03:51 UTC | Ganymede's transit endstakes 8 min | — |
| Jun 14 04:41 UTC | Ganymede's shadow enters the disctakes 7 min | — |
| Jun 14 08:10 UTC | Ganymede's shadow leaves the disctakes 9 min | — |
| Jun 14 08:20 UTC | Ganymede's shadow enters the disc | — |
| Jun 14 08:24 UTC | Ganymede's shadow leaves the disc | — |
| Jun 14 12:59 UTC | Europa begins its transit across the disctakes 4 min | — |
| Jun 14 15:11 UTC | Europa's shadow enters the disctakes 3 min | — |
| Jun 14 15:50 UTC | Europa's transit endstakes 4 min | — |
| Jun 14 17:57 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Jun 14 19:08 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 14 22:31 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 15 16:18 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 15 17:24 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 15 18:36 UTC | Io's transit endstakes 4 min | — |
| Jun 15 19:39 UTC | Io's shadow leaves the disctakes 6 min | — |
| Jun 16 07:16 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Jun 16 12:20 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Jun 16 13:38 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 16 17:00 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 17 10:48 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 17 11:52 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 17 13:06 UTC | Io's transit endstakes 4 min | — |
| Jun 17 14:08 UTC | Io's shadow leaves the disctakes 4 min | — |
| Jun 17 14:18 UTC | Ganymede disappears behind Jupitertakes 8 min | — |
| Jun 17 17:58 UTC | Ganymede reappears from behind Jupitertakes 8 min | — |
| Jun 17 18:42 UTC | Ganymede disappears into Jupiter's shadowtakes 8 min | — |
| Jun 17 22:15 UTC | Ganymede reappears from Jupiter's shadowtakes 8 min | — |
| Jun 18 02:21 UTC | Europa begins its transit across the disctakes 4 min | — |
| Jun 18 04:28 UTC | Europa's shadow enters the disctakes 3 min | — |
| Jun 18 05:12 UTC | Europa's transit endstakes 4 min | — |
| Jun 18 07:14 UTC | Europa's shadow leaves the disctakes 8 min | — |
| Jun 18 08:08 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 18 11:28 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 19 05:17 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 19 06:21 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 19 07:36 UTC | Io's transit endstakes 4 min | — |
| Jun 19 08:37 UTC | Io's shadow leaves the disctakes 6 min | — |
| Jun 19 20:38 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Jun 20 01:38 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Jun 20 02:37 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 20 05:57 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 20 23:47 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 21 00:50 UTC | Io's shadow enters the disctakes 6 min | — |
| Jun 21 02:06 UTC | Io's transit endstakes 4 min | — |
| Jun 21 03:05 UTC | Io's shadow leaves the disctakes 4 min | — |
| Jun 21 04:28 UTC | Ganymede begins its transit across the disctakes 8 min | — |
| Jun 21 08:06 UTC | Ganymede's transit endstakes 8 min | — |
| Jun 21 08:40 UTC | Ganymede's shadow enters the disctakes 10 min | — |
| Jun 21 11:07 UTC | Callisto disappears behind Jupitertakes 10 min | — |
| Jun 21 12:10 UTC | Ganymede's shadow leaves the disctakes 7 min | — |
| Jun 21 12:18 UTC | Ganymede's shadow enters the disc | — |
| Jun 21 12:22 UTC | Ganymede's shadow leaves the disc | — |
| Jun 21 15:43 UTC | Europa begins its transit across the disctakes 4 min | — |
| Jun 21 15:54 UTC | Callisto reappears from behind Jupitertakes 10 min | — |
| Jun 21 17:46 UTC | Europa's shadow enters the disctakes 6 min | — |
| Jun 21 18:34 UTC | Europa's transit endstakes 4 min | — |
| Jun 21 20:32 UTC | Europa's shadow leaves the disctakes 4 min | — |
| Jun 21 21:07 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 21 21:11 UTC | Callisto disappears into Jupiter's shadowtakes 11 min | — |
| Jun 22 00:26 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 22 01:30 UTC | Callisto reappears from Jupiter's shadowtakes 11 min | — |
| Jun 22 18:17 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 22 19:19 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 22 20:36 UTC | Io's transit endstakes 4 min | — |
| Jun 22 21:34 UTC | Io's shadow leaves the disctakes 6 min | — |
| Jun 23 10:02 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Jun 23 14:57 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Jun 23 15:37 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 23 18:54 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 24 12:47 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 24 13:48 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 24 15:06 UTC | Io's transit endstakes 4 min | — |
| Jun 24 16:03 UTC | Io's shadow leaves the disctakes 6 min | — |
| Jun 24 18:35 UTC | Ganymede disappears behind Jupitertakes 8 min | — |
| Jun 24 22:15 UTC | Ganymede reappears from behind Jupitertakes 8 min | — |
| Jun 24 22:41 UTC | Ganymede disappears into Jupiter's shadowtakes 8 min | — |
| Jun 25 02:14 UTC | Ganymede reappears from Jupiter's shadowtakes 8 min | — |
| Jun 25 05:05 UTC | Europa begins its transit across the disctakes 4 min | — |
| Jun 25 07:03 UTC | Europa's shadow enters the disctakes 3 min | — |
| Jun 25 07:56 UTC | Europa's transit endstakes 4 min | — |
| Jun 25 09:50 UTC | Europa's shadow leaves the disctakes 3 min | — |
| Jun 25 10:07 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 25 13:23 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 26 07:17 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 26 08:16 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 26 09:36 UTC | Io's transit endstakes 4 min | — |
| Jun 26 10:32 UTC | Io's shadow leaves the disctakes 4 min | — |
| Jun 26 23:25 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Jun 27 04:15 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Jun 27 04:37 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 27 07:51 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 28 01:47 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 28 02:45 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 28 04:06 UTC | Io's transit endstakes 4 min | — |
| Jun 28 05:01 UTC | Io's shadow leaves the disctakes 6 min | — |
| Jun 28 08:46 UTC | Ganymede begins its transit across the disctakes 8 min | — |
| Jun 28 12:25 UTC | Ganymede's transit endstakes 8 min | — |
| Jun 28 12:39 UTC | Ganymede's shadow enters the disctakes 7 min | — |
| Jun 28 16:10 UTC | Ganymede's shadow leaves the disctakes 12 min | — |
| Jun 28 18:27 UTC | Europa begins its transit across the disctakes 4 min | — |
| Jun 28 20:21 UTC | Europa's shadow enters the disctakes 3 min | — |
| Jun 28 21:18 UTC | Europa's transit endstakes 4 min | — |
| Jun 28 23:07 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 28 23:07 UTC | Europa's shadow leaves the disctakes 6 min | — |
| Jun 29 02:20 UTC | Io reappears from Jupiter's shadowtakes 4 min | — |
| Jun 29 20:17 UTC | Io begins its transit across the disctakes 4 min | — |
| Jun 29 21:14 UTC | Io's shadow enters the disctakes 3 min | — |
| Jun 29 22:25 UTC | Callisto begins its transit across the disctakes 10 min | — |
| Jun 29 22:36 UTC | Io's transit endstakes 4 min | — |
| Jun 29 23:30 UTC | Io's shadow leaves the disctakes 3 min | — |
| Jun 30 03:07 UTC | Callisto's transit endstakes 10 min | — |
| Jun 30 07:20 UTC | Callisto's shadow enters the disctakes 12 min | — |
| Jun 30 11:36 UTC | Callisto's shadow leaves the disctakes 10 min | — |
| Jun 30 11:46 UTC | Callisto's shadow enters the disc | — |
| Jun 30 11:52 UTC | Callisto's shadow leaves the disc | — |
| Jun 30 12:49 UTC | Europa disappears behind Jupitertakes 4 min | — |
| Jun 30 17:34 UTC | Europa reappears from Jupiter's shadowtakes 4 min | — |
| Jun 30 17:37 UTC | Io disappears behind Jupitertakes 4 min | — |
| Jun 30 20:49 UTC | Io reappears from Jupiter's shadowtakes 4 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.