Occult occultations, computed
Location

Jupiter's moons in February 2027

Io · Europa · Ganymede · Callisto — 5 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 · February 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

63 events you can see from New Delhi this month, on 24 nights

Mon
Tue
Wed
Thu
Fri
Sat
Sun
1222324452647183
9
101113122134141154
16
17
182194204212223
23
242252264273282
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 Feb

  1. Ganymede in Jupiter's shadow
    20:28 disappears → reappears unseen · 3 h 37 min
    Jupiter 23° up · dark sky
  2. Ganymede behind Jupiter
    disappears unseen → 01:02 reappears · 3 h 38 min
    Jupiter 76° up · dark sky

Night of Tue 2 Feb

  1. Io's shadow crosses Jupiter
    05:04 enters → 07:21 leaves · 2 h 18 min
    Jupiter 35° up · dark sky
  2. Io crosses Jupiter
    05:15 enters → 07:33 leaves · 2 h 17 min
    Jupiter 32° up · dark sky

Night of Wed 3 Feb

  1. Io in Jupiter's shadow
    02:21 disappears → reappears unseen · 2 h 18 min
    Jupiter 68° up · dark sky
  2. Io behind Jupiter
    disappears unseen → 04:50 reappears · 2 h 18 min
    Jupiter 37° up · dark sky

Night of Thu 4 Feb

  1. Io's shadow crosses Jupiter
    23:32 enters → 01:50 leaves · 2 h 18 min
    Jupiter 65° up · dark sky
  2. Io crosses Jupiter
    23:41 enters → 01:59 leaves · 2 h 17 min
    Jupiter 67° up · dark sky
  3. Europa in Jupiter's shadow
    02:58 disappears → reappears unseen · 2 h 50 min
    Jupiter 60° up · dark sky
  4. Europa behind Jupiter
    disappears unseen → 06:06 reappears · 2 h 50 min
    Jupiter 19° up · dark sky

Night of Fri 5 Feb

  1. Io in Jupiter's shadow
    20:50 disappears → reappears unseen · 2 h 18 min
    Jupiter 31° up · dark sky
  2. Io behind Jupiter
    disappears unseen → 23:16 reappears · 2 h 18 min
    Jupiter 63° up · dark sky

Night of Sat 6 Feb

  1. Io's shadow crosses Jupiter
    18:00 enters → 20:18 leaves · 2 h 18 min
    Jupiter below the horizon
  2. Io crosses Jupiter
    18:07 enters → 20:24 leaves · 2 h 17 min
    Jupiter below the horizon
  3. Europa's shadow crosses Jupiter
    21:51 enters → 00:45 leaves · 2 h 54 min
    Jupiter 46° up · dark sky
  4. Europa crosses Jupiter
    22:05 enters → 00:57 leaves · 2 h 52 min
    Jupiter 49° up · dark sky

Night of Sun 7 Feb

  1. Callisto in Jupiter's shadow
    02:20 disappears → reappears unseen · 4 h 43 min
    Jupiter 65° up · dark sky

Night of Mon 8 Feb

  1. Europa behind Jupiter
    disappears unseen → 19:12 reappears · 2 h 50 min
    Jupiter 13° up · dark sky
  2. Ganymede in Jupiter's shadow
    00:27 disappears → reappears unseen · 3 h 37 min
    Jupiter 76° up · dark sky
  3. Ganymede behind Jupiter
    disappears unseen → 04:17 reappears · 3 h 38 min
    Jupiter 39° up · dark sky

Night of Wed 10 Feb

  1. Io behind Jupiter
    04:15 disappears → 06:34 reappears · 2 h 18 min
    Jupiter 38° up · dark sky

Night of Thu 11 Feb

  1. Io crosses Jupiter
    01:25 enters → 03:42 leaves · 2 h 17 min
    Jupiter 72° up · dark sky
  2. Io's shadow crosses Jupiter
    01:27 enters → 03:43 leaves · 2 h 17 min
    Jupiter 72° up · dark sky
  3. Europa behind Jupiter
    05:29 disappears → reappears unseen · 2 h 50 min
    Jupiter 21° up · dark sky

Night of Fri 12 Feb

  1. Io behind Jupiter
    22:41 disappears → reappears unseen · 2 h 18 min
    Jupiter 62° up · dark sky
  2. Io in Jupiter's shadow
    disappears unseen → 01:02 reappears · 2 h 18 min
    Jupiter 74° up · dark sky

Night of Sat 13 Feb

  1. Io crosses Jupiter
    19:51 enters → 22:08 leaves · 2 h 17 min
    Jupiter 26° up · dark sky
  2. Io's shadow crosses Jupiter
    19:54 enters → 22:12 leaves · 2 h 18 min
    Jupiter 27° up · dark sky
  3. Europa crosses Jupiter
    00:20 enters → 03:12 leaves · 2 h 53 min
    Jupiter 77° up · dark sky
  4. Europa's shadow crosses Jupiter
    00:29 enters → 03:21 leaves · 2 h 53 min
    Jupiter 77° up · dark sky

Night of Sun 14 Feb

  1. Io in Jupiter's shadow
    disappears unseen → 19:31 reappears · 2 h 18 min
    Jupiter 23° up · dark sky

Night of Mon 15 Feb

  1. Europa behind Jupiter
    18:35 disappears → reappears unseen · 2 h 51 min
    Jupiter 12° up · dusk
  2. Io eclipses Ganymede
    21:36 · 3.9 min
    5% of Ganymede covered · ≈0.1 mag fainter · Jupiter 51° up · dark sky
  3. Europa in Jupiter's shadow
    disappears unseen → 21:39 reappears · 2 h 50 min
    Jupiter 52° up · dark sky
  4. Ganymede behind Jupiter
    03:54 disappears → reappears unseen · 3 h 38 min
    Jupiter 38° up · dark sky

Night of Thu 18 Feb

  1. Io crosses Jupiter
    03:08 enters → 05:26 leaves · 2 h 17 min
    Jupiter 45° up · dark sky
  2. Io's shadow crosses Jupiter
    03:21 enters → 05:37 leaves · 2 h 17 min
    Jupiter 42° up · dark sky

Night of Fri 19 Feb

  1. Ganymede crosses Jupiter
    17:35 enters → 21:12 leaves · 3 h 37 min
    Jupiter 3° up · daylight
  2. Ganymede's shadow crosses Jupiter
    18:27 enters → 22:04 leaves · 3 h 37 min
    Jupiter 14° up · twilight
  3. Io behind Jupiter
    00:25 disappears → reappears unseen · 2 h 18 min
    Jupiter 75° up · dark sky
  4. Io in Jupiter's shadow
    disappears unseen → 02:57 reappears · 2 h 18 min
    Jupiter 46° up · dark sky

Night of Sat 20 Feb

  1. Io crosses Jupiter
    21:34 enters → 23:52 leaves · 2 h 17 min
    Jupiter 56° up · dark sky
  2. Io's shadow crosses Jupiter
    21:48 enters → 00:06 leaves · 2 h 18 min
    Jupiter 59° up · dark sky
  3. Europa crosses Jupiter
    02:35 enters → 05:27 leaves · 2 h 53 min
    Jupiter 50° up · dark sky
  4. Europa's shadow crosses Jupiter
    03:04 enters → 05:58 leaves · 2 h 54 min
    Jupiter 44° up · dark sky

Night of Sun 21 Feb

  1. Io behind Jupiter
    18:51 disappears → reappears unseen · 2 h 18 min
    Jupiter 21° up · dusk
  2. Io in Jupiter's shadow
    disappears unseen → 21:25 reappears · 2 h 18 min
    Jupiter 55° up · dark sky

Night of Mon 22 Feb

  1. Europa behind Jupiter
    20:49 disappears → reappears unseen · 2 h 51 min
    Jupiter 48° up · dark sky
  2. Europa in Jupiter's shadow
    disappears unseen → 00:13 reappears · 2 h 50 min
    Jupiter 75° up · dark sky
  3. Io eclipses Ganymede
    00:34 · 3.3 min
    2% of Ganymede covered · ≈0.0 mag fainter · Jupiter 73° up · dark sky

Night of Wed 24 Feb

  1. Europa's shadow crosses Jupiter
    16:23 enters → 19:16 leaves · 2 h 53 min
    Jupiter below the horizon
  2. Callisto in Jupiter's shadow
    disappears unseen → 01:03 reappears · 4 h 41 min
    Jupiter 66° up · dark sky

Night of Thu 25 Feb

  1. Io crosses Jupiter
    04:52 enters → 07:10 leaves · 2 h 17 min
    Jupiter 15° up · dark sky
  2. Io's shadow crosses Jupiter
    05:15 enters → 07:31 leaves · 2 h 17 min
    Jupiter 10° up · dark sky

Night of Fri 26 Feb

  1. Ganymede crosses Jupiter
    20:53 enters → 00:30 leaves · 3 h 37 min
    Jupiter 53° up · dark sky
  2. Ganymede's shadow crosses Jupiter
    22:24 enters → 02:02 leaves · 3 h 38 min
    Jupiter 71° up · dark sky
  3. Io behind Jupiter
    02:10 disappears → reappears unseen · 2 h 18 min
    Jupiter 50° up · dark sky
  4. Io in Jupiter's shadow
    disappears unseen → 04:51 reappears · 2 h 18 min
    Jupiter 15° up · dark sky

Night of Sat 27 Feb

  1. Io crosses Jupiter
    23:18 enters → 01:36 leaves · 2 h 17 min
    Jupiter 77° up · dark sky
  2. Io's shadow crosses Jupiter
    23:42 enters → 02:00 leaves · 2 h 17 min
    Jupiter 76° up · dark sky
  3. Europa crosses Jupiter
    04:51 enters → 07:43 leaves · 2 h 53 min
    Jupiter 14° up · dark sky

Night of Sun 28 Feb

  1. Io behind Jupiter
    20:36 disappears → reappears unseen · 2 h 18 min
    Jupiter 51° up · dark sky
  2. Io in Jupiter's shadow
    disappears unseen → 23:20 reappears · 2 h 18 min
    Jupiter 77° 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.