Occult occultations, computed
Location

Jupiter's moons in March 2027

Io · Europa · Ganymede · Callisto — 16 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 — the moons' orbits are edge-on to the Sun and they eclipse and occult each other. Pick your place: the calendar and the nights keep only what your sky shows.

Where the moons are

Jupiter · March 2027

Jupiter's equator horizontal, east to the left as in binoculars. Drag through the month, or tap any event below to jump there; full screen (⤢) steps through a single night a minute at a time. Moons behind the planet fade, a moon in Jupiter's shadow is an empty ring, and a shadow on the disc is placed from the listed times. Positions ±0.1 Jupiter radii — for the picture; the times come from JPL.

Events

65 events you can see from New Delhi this month, on 25 nights

Mon
Tue
Wed
Thu
Fri
Sat
Sun
152132415362728395102
11
121133142153163172
18
191
20
213222235244
25
262
27
28
293303312
behind the planetin its shadowcrossing its faceshadow on the planetmoons eclipse or hide each other

Times in IST, when the moon's centre crosses the edge — as almanacs list them. A night runs from noon to noon. Tap an event to see it in the diagram.

Night of Mon 1 Mar

  1. Io crosses Jupiter
    17:44 enters → 20:02 leaves · 2 h 17 min
    Jupiter 14° up · daylight
  2. Io's shadow crosses Jupiter
    18:11 enters → 20:28 leaves · 2 h 17 min
    Jupiter 20° up · daylight
  3. Europa behind Jupiter
    23:03 disappears → reappears unseen · 2 h 51 min
    Jupiter 77° up · dark sky
  4. Europa in Jupiter's shadow
    disappears unseen → 02:48 reappears · 2 h 50 min
    Jupiter 39° up · dark sky
  5. Io eclipses Ganymede
    03:42 · 2.8 min
    1% of Ganymede covered · ≈0.0 mag fainter · Jupiter 27° up · dark sky

Night of Tue 2 Mar

  1. Io eclipses Ganymede
    22:14 · 134.6 min
    9% of Ganymede covered · ≈0.1 mag fainter · Jupiter 72° up · dark sky

Night of Wed 3 Mar

  1. Europa crosses Jupiter
    17:59 enters → 20:52 leaves · 2 h 53 min
    Jupiter 20° up · daylight
  2. Europa's shadow crosses Jupiter
    19:01 enters → 21:52 leaves · 2 h 51 min
    Jupiter 33° up · dusk

Night of Thu 4 Mar

  1. Callisto crosses Jupiter
    01:49 enters → 06:28 leaves · 4 h 39 min
    Jupiter 49° up · dark sky

Night of Fri 5 Mar

  1. Ganymede crosses Jupiter
    00:12 enters → 03:49 leaves · 3 h 37 min
    Jupiter 68° up · dark sky
  2. Ganymede's shadow crosses Jupiter
    02:24 enters → 05:58 leaves · 3 h 34 min
    Jupiter 40° up · dark sky
  3. Io behind Jupiter
    03:55 disappears → reappears unseen · 2 h 18 min
    Jupiter 20° up · dark sky

Night of Sat 6 Mar

  1. Io crosses Jupiter
    01:03 enters → 03:20 leaves · 2 h 18 min
    Jupiter 57° up · dark sky
  2. Io's shadow crosses Jupiter
    01:37 enters → 03:54 leaves · 2 h 17 min
    Jupiter 50° up · dark sky

Night of Sun 7 Mar

  1. Io behind Jupiter
    22:21 disappears → reappears unseen · 2 h 18 min
    Jupiter 76° up · dark sky
  2. Io in Jupiter's shadow
    disappears unseen → 01:15 reappears · 2 h 18 min
    Jupiter 53° up · dark sky

Night of Mon 8 Mar

  1. Io crosses Jupiter
    19:29 enters → 21:47 leaves · 2 h 18 min
    Jupiter 44° up · dark sky
  2. Io's shadow crosses Jupiter
    20:05 enters → 22:23 leaves · 2 h 17 min
    Jupiter 52° up · dark sky
  3. Europa behind Jupiter
    01:19 disappears → reappears unseen · 2 h 51 min
    Jupiter 52° up · dark sky

Night of Tue 9 Mar

  1. Io eclipses Ganymede
    19:14 · 18.1 min
    18% of Ganymede covered · ≈0.2 mag fainter · Jupiter 42° up · dusk
  2. Io in Jupiter's shadow
    disappears unseen → 19:43 reappears · 2 h 18 min
    Jupiter 48° up · dark sky
  3. Ganymede in Jupiter's shadow
    disappears unseen → 20:00 reappears · 3 h 37 min
    Jupiter 52° up · dark sky
  4. Io occults Ganymede
    22:42 · 40.3 min
    13% of Ganymede covered · ≈0.1 mag fainter · Jupiter 78° up · dark sky
  5. Io occults Ganymede
    01:40 · 24.0 min
    3% of Ganymede covered · ≈0.0 mag fainter · Jupiter 46° up · dark sky

Night of Wed 10 Mar

  1. Europa crosses Jupiter
    20:17 enters → 23:10 leaves · 2 h 53 min
    Jupiter 57° up · dark sky
  2. Europa's shadow crosses Jupiter
    21:36 enters → 00:28 leaves · 2 h 52 min
    Jupiter 72° up · dark sky

Night of Fri 12 Mar

  1. Ganymede crosses Jupiter
    03:34 enters → 07:11 leaves · 3 h 37 min
    Jupiter 18° up · dark sky

Night of Sat 13 Mar

  1. Callisto in Jupiter's shadow
    14:24 disappears → 19:03 reappears · 4 h 39 min
    Jupiter below the horizon
  2. Io crosses Jupiter
    02:49 enters → 05:06 leaves · 2 h 18 min
    Jupiter 27° up · dark sky
  3. Io's shadow crosses Jupiter
    03:31 enters → 05:48 leaves · 2 h 17 min
    Jupiter 18° up · dark sky

Night of Sun 14 Mar

  1. Io behind Jupiter
    00:07 disappears → reappears unseen · 2 h 18 min
    Jupiter 61° up · dark sky
  2. Io in Jupiter's shadow
    disappears unseen → 03:09 reappears · 2 h 18 min
    Jupiter 22° up · dark sky

Night of Mon 15 Mar

  1. Io crosses Jupiter
    21:15 enters → 23:33 leaves · 2 h 18 min
    Jupiter 72° up · dark sky
  2. Io's shadow crosses Jupiter
    22:01 enters → 00:16 leaves · 2 h 15 min
    Jupiter 78° up · dark sky
  3. Europa behind Jupiter
    03:37 disappears → reappears unseen · 2 h 51 min
    Jupiter 15° up · dark sky

Night of Tue 16 Mar

  1. Io occults Ganymede
    20:50 · 21.0 min
    29% of Ganymede covered · ≈0.2 mag fainter · Jupiter 68° up · dark sky
  2. Io in Jupiter's shadow
    disappears unseen → 21:38 reappears · 2 h 18 min
    Jupiter 76° up · dark sky
  3. Ganymede in Jupiter's shadow
    disappears unseen → 23:59 reappears · 3 h 37 min
    Jupiter 61° up · dark sky

Night of Wed 17 Mar

  1. Europa crosses Jupiter
    22:37 enters → 01:30 leaves · 2 h 53 min
    Jupiter 76° up · dark sky
  2. Europa's shadow crosses Jupiter
    00:13 enters → 03:04 leaves · 2 h 52 min
    Jupiter 58° up · dark sky

Night of Fri 19 Mar

  1. Europa in Jupiter's shadow
    disappears unseen → 21:15 reappears · 2 h 50 min
    Jupiter 75° up · dark sky

Night of Sun 21 Mar

  1. Callisto crosses Jupiter
    16:41 enters → 21:23 leaves · 4 h 42 min
    Jupiter 20° up · daylight
  2. Callisto's shadow crosses Jupiter
    00:45 enters → 05:23 leaves · 4 h 37 min
    Jupiter 47° up · dark sky
  3. Io behind Jupiter
    01:54 disappears → reappears unseen · 2 h 18 min
    Jupiter 32° up · dark sky

Night of Mon 22 Mar

  1. Io crosses Jupiter
    23:02 enters → 01:20 leaves · 2 h 18 min
    Jupiter 68° up · dark sky
  2. Io's shadow crosses Jupiter
    23:54 enters → 02:11 leaves · 2 h 17 min
    Jupiter 57° up · dark sky

Night of Tue 23 Mar

  1. Io occults Ganymede
    19:44 · 23.6 min
    38% of Ganymede covered · ≈0.3 mag fainter · Jupiter 61° up · dark sky
  2. Io behind Jupiter
    20:21 disappears → reappears unseen · 2 h 18 min
    Jupiter 69° up · dark sky
  3. Ganymede behind Jupiter
    20:43 disappears → 00:22 reappears · 3 h 39 min
    Jupiter 73° up · dark sky
  4. Io in Jupiter's shadow
    disappears unseen → 23:33 reappears · 2 h 18 min
    Jupiter 61° up · dark sky
  5. Ganymede in Jupiter's shadow
    00:22 disappears → 03:59 reappears · 3 h 36 min
    Jupiter 50° up · dark sky

Night of Wed 24 Mar

  1. Io crosses Jupiter
    17:29 enters → 19:47 leaves · 2 h 18 min
    Jupiter 33° up · daylight
  2. Io's shadow crosses Jupiter
    18:23 enters → 20:40 leaves · 2 h 17 min
    Jupiter 45° up · daylight
  3. Europa crosses Jupiter
    00:58 enters → 03:51 leaves · 2 h 53 min
    Jupiter 41° up · dark sky
  4. Europa's shadow crosses Jupiter
    02:49 enters → 05:39 leaves · 2 h 50 min
    Jupiter 17° up · dark sky

Night of Fri 26 Mar

  1. Europa behind Jupiter
    19:07 disappears → reappears unseen · 2 h 52 min
    Jupiter 56° up · dusk
  2. Europa in Jupiter's shadow
    disappears unseen → 23:51 reappears · 2 h 50 min
    Jupiter 54° up · dark sky

Night of Mon 29 Mar

  1. Callisto behind Jupiter
    22:55 disappears → 03:42 reappears · 4 h 47 min
    Jupiter 63° up · dark sky
  2. Io crosses Jupiter
    00:50 enters → 03:08 leaves · 2 h 18 min
    Jupiter 39° up · dark sky
  3. Io's shadow crosses Jupiter
    01:49 enters → 04:06 leaves · 2 h 17 min
    Jupiter 26° up · dark sky

Night of Tue 30 Mar

  1. Io behind Jupiter
    22:10 disappears → reappears unseen · 2 h 18 min
    Jupiter 72° up · dark sky
  2. Ganymede behind Jupiter
    00:15 disappears → 03:54 reappears · 3 h 40 min
    Jupiter 46° up · dark sky
  3. Io in Jupiter's shadow
    disappears unseen → 01:28 reappears · 2 h 18 min
    Jupiter 29° up · dark sky

Night of Wed 31 Mar

  1. Io crosses Jupiter
    19:17 enters → 21:35 leaves · 2 h 18 min
    Jupiter 63° up · dusk
  2. Io's shadow crosses Jupiter
    20:19 enters → 22:33 leaves · 2 h 14 min
    Jupiter 74° up · dark sky

Reading the list

Times are for the moment the moon's centre crosses the edge of Jupiter or of its shadow, the convention of published tables; the moon's own disc takes a few minutes to cross. A start or end marked unseen happens behind Jupiter or inside its shadow. “Only what I can see” keeps events with Jupiter more than 10° up in a dark sky. Positions are from JPL DE431 and the jup365 satellite ephemeris, Jupiter as an oblate spheroid with its shadow cone. Mutual-event brightness drops assume uniform discs and are estimates. Events are geocentric — the same instant everywhere on Earth to well under a second.