Great Red Spot transit times, 2014

Following are Great Red Spot transit times for 2014. They are based on a "current" (as of the start of the table) longitude for the GRS, plus a gradual drift of about eight degrees a year (which is what the GRS has been doing of late). Since clouds are not entirely predictable (ask any meteorologist), that longitude will slowly become outdated; if you happen to actually observe Jupiter, you'll find that these predictions may be off by a few minutes.

There is also a page of GRS transit times and information on the Sky & Telescope Web site. The layout is somewhat different from the following, and may be more appealing to some people.

You can also get Jupiter's central meridians for any desired time, in all three systems, from this site.

The following data were computed using Guide 9.0 . All times are in Universal Time.

Click here for a simple formula to compute GRS transit times. As a side benefit, the formula also provides the longitude of the central meridian of Jupiter, in all three of the Jovian longitude systems.

Click for a list of Jovian satellite events

Click for January Great Red Spot transit times
Click for February Great Red Spot transit times
Click for March Great Red Spot transit times
Click for April Great Red Spot transit times
Click for May Great Red Spot transit times
Click for June Great Red Spot transit times
Click for July Great Red Spot transit times
Click for August Great Red Spot transit times
Click for September Great Red Spot transit times
Click for October Great Red Spot transit times
Click for November Great Red Spot transit times
Click for December Great Red Spot transit times

1 Jan 8:24
1 Jan 18:20
2 Jan 4:15
2 Jan 14:11
3 Jan 0:06
3 Jan 10:02
3 Jan 19:58
4 Jan 5:53
4 Jan 15:49
5 Jan 1:44
5 Jan 11:40
5 Jan 21:36
6 Jan 7:31
6 Jan 17:27
7 Jan 3:22
7 Jan 13:18
7 Jan 23:13
8 Jan 9:09
8 Jan 19:05
9 Jan 5:00
9 Jan 14:56
10 Jan 0:51
10 Jan 10:47
10 Jan 20:43
11 Jan 6:38
11 Jan 16:34
12 Jan 2:29
12 Jan 12:25
12 Jan 22:21
13 Jan 8:16
13 Jan 18:12
14 Jan 4:07
14 Jan 14:03
14 Jan 23:59
15 Jan 9:54
15 Jan 19:50
16 Jan 5:45
16 Jan 15:41
17 Jan 1:37
17 Jan 11:32
17 Jan 21:28
18 Jan 7:23
18 Jan 17:19
19 Jan 3:15
19 Jan 13:10
19 Jan 23:06
20 Jan 9:01
20 Jan 18:57
21 Jan 4:53
21 Jan 14:48
22 Jan 0:44
22 Jan 10:39
22 Jan 20:35
23 Jan 6:31
23 Jan 16:26
24 Jan 2:22
24 Jan 12:18
24 Jan 22:13
25 Jan 8:09
25 Jan 18:04
26 Jan 4:00
26 Jan 13:56
26 Jan 23:51
27 Jan 9:47
27 Jan 19:42
28 Jan 5:38
28 Jan 15:34
29 Jan 1:29
29 Jan 11:25
29 Jan 21:21
30 Jan 7:16
30 Jan 17:12
31 Jan 3:08
31 Jan 13:03
31 Jan 22:59
1 Feb 8:54
1 Feb 18:50
2 Feb 4:46
2 Feb 14:41
3 Feb 0:37
3 Feb 10:33
3 Feb 20:28
4 Feb 6:24
4 Feb 16:20
5 Feb 2:15
5 Feb 12:11
5 Feb 22:06
6 Feb 8:02
6 Feb 17:58
7 Feb 3:53
7 Feb 13:49
7 Feb 23:45
8 Feb 9:40
8 Feb 19:36
9 Feb 5:32
9 Feb 15:27
10 Feb 1:23
10 Feb 11:19
10 Feb 21:14
11 Feb 7:10
11 Feb 17:06
12 Feb 3:01
12 Feb 12:57
12 Feb 22:53
13 Feb 8:48
13 Feb 18:44
14 Feb 4:40
14 Feb 14:35
15 Feb 0:31
15 Feb 10:27
15 Feb 20:22
16 Feb 6:18
16 Feb 16:14
17 Feb 2:09
17 Feb 12:05
17 Feb 22:01
18 Feb 7:56
18 Feb 17:52
19 Feb 3:48
19 Feb 13:43
19 Feb 23:39
20 Feb 9:35
20 Feb 19:31
21 Feb 5:26
21 Feb 15:22
22 Feb 1:18
22 Feb 11:13
22 Feb 21:09
23 Feb 7:05
23 Feb 17:00
24 Feb 2:56
24 Feb 12:52
24 Feb 22:47
25 Feb 8:43
25 Feb 18:39
26 Feb 4:35
26 Feb 14:30
27 Feb 0:26
27 Feb 10:22
27 Feb 20:17
28 Feb 6:13
28 Feb 16:09
1 Mar 2:05
1 Mar 12:00
1 Mar 21:56
2 Mar 7:52
2 Mar 17:47
3 Mar 3:43
3 Mar 13:39
3 Mar 23:35
4 Mar 9:30
4 Mar 19:26
5 Mar 5:22
5 Mar 15:17
6 Mar 1:13
6 Mar 11:09
6 Mar 21:05
7 Mar 7:00
7 Mar 16:56
8 Mar 2:52
8 Mar 12:48
8 Mar 22:43
9 Mar 8:39
9 Mar 18:35
10 Mar 4:30
10 Mar 14:26
11 Mar 0:22
11 Mar 10:18
11 Mar 20:13
12 Mar 6:09
12 Mar 16:05
13 Mar 2:01
13 Mar 11:56
13 Mar 21:52
14 Mar 7:48
14 Mar 17:44
15 Mar 3:39
15 Mar 13:35
15 Mar 23:31
16 Mar 9:27
16 Mar 19:22
17 Mar 5:18
17 Mar 15:14
18 Mar 1:10
18 Mar 11:05
18 Mar 21:01
19 Mar 6:57
19 Mar 16:53
20 Mar 2:48
20 Mar 12:44
20 Mar 22:40
21 Mar 8:36
21 Mar 18:32
22 Mar 4:27
22 Mar 14:23
23 Mar 0:19
23 Mar 10:15
23 Mar 20:10
24 Mar 6:06
24 Mar 16:02
25 Mar 1:58
25 Mar 11:53
25 Mar 21:49
26 Mar 7:45
26 Mar 17:41
27 Mar 3:37
27 Mar 13:32
27 Mar 23:28
28 Mar 9:24
28 Mar 19:20
29 Mar 5:15
29 Mar 15:11
30 Mar 1:07
30 Mar 11:03
30 Mar 20:59
31 Mar 6:54
31 Mar 16:50
1 Apr 2:46
1 Apr 12:42
1 Apr 22:37
2 Apr 8:33
2 Apr 18:29
3 Apr 4:25
3 Apr 14:21
4 Apr 0:16
4 Apr 10:12
4 Apr 20:08
5 Apr 6:04
5 Apr 16:00
6 Apr 1:55
6 Apr 11:51
6 Apr 21:47
7 Apr 7:43
7 Apr 17:39
8 Apr 3:34
8 Apr 13:30
8 Apr 23:26
9 Apr 9:22
9 Apr 19:18
10 Apr 5:13
10 Apr 15:09
11 Apr 1:05
11 Apr 11:01
11 Apr 20:57
12 Apr 6:52
12 Apr 16:48
13 Apr 2:44
13 Apr 12:40
13 Apr 22:36
14 Apr 8:31
14 Apr 18:27
15 Apr 4:23
15 Apr 14:19
16 Apr 0:15
16 Apr 10:10
16 Apr 20:06
17 Apr 6:02
17 Apr 15:58
18 Apr 1:54
18 Apr 11:50
18 Apr 21:45
19 Apr 7:41
19 Apr 17:37
20 Apr 3:33
20 Apr 13:29
20 Apr 23:24
21 Apr 9:20
21 Apr 19:16
22 Apr 5:12
22 Apr 15:08
23 Apr 1:04
23 Apr 10:59
23 Apr 20:55
24 Apr 6:51
24 Apr 16:47
25 Apr 2:43
25 Apr 12:38
25 Apr 22:34
26 Apr 8:30
26 Apr 18:26
27 Apr 4:22
27 Apr 14:18
28 Apr 0:13
28 Apr 10:09
28 Apr 20:05
29 Apr 6:01
29 Apr 15:57
30 Apr 1:53
30 Apr 11:48
30 Apr 21:44
1 May 7:40
1 May 17:36
2 May 3:32
2 May 13:28
2 May 23:23
3 May 9:19
3 May 19:15
4 May 5:11
4 May 15:07
5 May 1:03
5 May 10:58
5 May 20:54
6 May 6:50
6 May 16:46
7 May 2:42
7 May 12:38
7 May 22:33
8 May 8:29
8 May 18:25
9 May 4:21
9 May 14:17
10 May 0:13
10 May 10:08
10 May 20:04
11 May 6:00
11 May 15:56
12 May 1:52
12 May 11:48
12 May 21:43
13 May 7:39
13 May 17:35
14 May 3:31
14 May 13:27
14 May 23:23
15 May 9:18
15 May 19:14
16 May 5:10
16 May 15:06
17 May 1:02
17 May 10:58
17 May 20:54
18 May 6:49
18 May 16:45
19 May 2:41
19 May 12:37
19 May 22:33
20 May 8:29
20 May 18:24
21 May 4:20
21 May 14:16
22 May 0:12
22 May 10:08
22 May 20:04
23 May 5:59
23 May 15:55
24 May 1:51
24 May 11:47
24 May 21:43
25 May 7:39
25 May 17:35
26 May 3:30
26 May 13:26
26 May 23:22
27 May 9:18
27 May 19:14
28 May 5:10
28 May 15:05
29 May 1:01
29 May 10:57
29 May 20:53
30 May 6:49
30 May 16:45
31 May 2:41
31 May 12:36
31 May 22:32
1 Jun 8:28
1 Jun 18:24
2 Jun 4:20
2 Jun 14:16
3 Jun 0:11
3 Jun 10:07
3 Jun 20:03
4 Jun 5:59
4 Jun 15:55
5 Jun 1:51
5 Jun 11:47
5 Jun 21:42
6 Jun 7:38
6 Jun 17:34
7 Jun 3:30
7 Jun 13:26
7 Jun 23:22
8 Jun 9:17
8 Jun 19:13
9 Jun 5:09
9 Jun 15:05
10 Jun 1:01
10 Jun 10:57
10 Jun 20:53
11 Jun 6:48
11 Jun 16:44
12 Jun 2:40
12 Jun 12:36
12 Jun 22:32
13 Jun 8:28
13 Jun 18:23
14 Jun 4:19
14 Jun 14:15
15 Jun 0:11
15 Jun 10:07
15 Jun 20:03
16 Jun 5:59
16 Jun 15:54
17 Jun 1:50
17 Jun 11:46
17 Jun 21:42
18 Jun 7:38
18 Jun 17:34
19 Jun 3:29
19 Jun 13:25
19 Jun 23:21
20 Jun 9:17
20 Jun 19:13
21 Jun 5:09
21 Jun 15:05
22 Jun 1:00
22 Jun 10:56
22 Jun 20:52
23 Jun 6:48
23 Jun 16:44
24 Jun 2:40
24 Jun 12:35
24 Jun 22:31
25 Jun 8:27
25 Jun 18:23
26 Jun 4:19
26 Jun 14:15
27 Jun 0:11
27 Jun 10:06
27 Jun 20:02
28 Jun 5:58
28 Jun 15:54
29 Jun 1:50
29 Jun 11:46
29 Jun 21:41
30 Jun 7:37
30 Jun 17:33
1 Jul 3:29
1 Jul 13:25
1 Jul 23:21
2 Jul 9:17
2 Jul 19:12
3 Jul 5:08
3 Jul 15:04
4 Jul 1:00
4 Jul 10:56
4 Jul 20:52
5 Jul 6:47
5 Jul 16:43
6 Jul 2:39
6 Jul 12:35
6 Jul 22:31
7 Jul 8:27
7 Jul 18:22
8 Jul 4:18
8 Jul 14:14
9 Jul 0:10
9 Jul 10:06
9 Jul 20:02
10 Jul 5:58
10 Jul 15:53
11 Jul 1:49
11 Jul 11:45
11 Jul 21:41
12 Jul 7:37
12 Jul 17:33
13 Jul 3:28
13 Jul 13:24
13 Jul 23:20
14 Jul 9:16
14 Jul 19:12
15 Jul 5:08
15 Jul 15:03
16 Jul 0:59
16 Jul 10:55
16 Jul 20:51
17 Jul 6:47
17 Jul 16:43
18 Jul 2:38
18 Jul 12:34
18 Jul 22:30
19 Jul 8:26
19 Jul 18:22
20 Jul 4:18
20 Jul 14:13
21 Jul 0:09
21 Jul 10:05
21 Jul 20:01
22 Jul 5:57
22 Jul 15:53
23 Jul 1:48
23 Jul 11:44
23 Jul 21:40
24 Jul 7:36
24 Jul 17:32
25 Jul 3:28
25 Jul 13:23
25 Jul 23:19
26 Jul 9:15
26 Jul 19:11
27 Jul 5:07
27 Jul 15:03
28 Jul 0:58
28 Jul 10:54
28 Jul 20:50
29 Jul 6:46
29 Jul 16:42
30 Jul 2:38
30 Jul 12:33
30 Jul 22:29
31 Jul 8:25
31 Jul 18:21
1 Aug 4:17
1 Aug 14:12
2 Aug 0:08
2 Aug 10:04
2 Aug 20:00
3 Aug 5:56
3 Aug 15:52
4 Aug 1:47
4 Aug 11:43
4 Aug 21:39
5 Aug 7:35
5 Aug 17:31
6 Aug 3:27
6 Aug 13:22
6 Aug 23:18
7 Aug 9:14
7 Aug 19:10
8 Aug 5:06
8 Aug 15:01
9 Aug 0:57
9 Aug 10:53
9 Aug 20:49
10 Aug 6:45
10 Aug 16:41
11 Aug 2:36
11 Aug 12:32
11 Aug 22:28
12 Aug 8:24
12 Aug 18:20
13 Aug 4:15
13 Aug 14:11
14 Aug 0:07
14 Aug 10:03
14 Aug 19:59
15 Aug 5:54
15 Aug 15:50
16 Aug 1:46
16 Aug 11:42
16 Aug 21:38
17 Aug 7:34
17 Aug 17:29
18 Aug 3:25
18 Aug 13:21
18 Aug 23:17
19 Aug 9:13
19 Aug 19:08
20 Aug 5:04
20 Aug 15:00
21 Aug 0:56
21 Aug 10:52
21 Aug 20:47
22 Aug 6:43
22 Aug 16:39
23 Aug 2:35
23 Aug 12:31
23 Aug 22:26
24 Aug 8:22
24 Aug 18:18
25 Aug 4:14
25 Aug 14:10
26 Aug 0:05
26 Aug 10:01
26 Aug 19:57
27 Aug 5:53
27 Aug 15:49
28 Aug 1:44
28 Aug 11:40
28 Aug 21:36
29 Aug 7:32
29 Aug 17:28
30 Aug 3:23
30 Aug 13:19
30 Aug 23:15
31 Aug 9:11
31 Aug 19:07
1 Sep 5:02
1 Sep 14:58
2 Sep 0:54
2 Sep 10:50
2 Sep 20:46
3 Sep 6:41
3 Sep 16:37
4 Sep 2:33
4 Sep 12:29
4 Sep 22:25
5 Sep 8:20
5 Sep 18:16
6 Sep 4:12
6 Sep 14:08
7 Sep 0:04
7 Sep 9:59
7 Sep 19:55
8 Sep 5:51
8 Sep 15:47
9 Sep 1:42
9 Sep 11:38
9 Sep 21:34
10 Sep 7:30
10 Sep 17:26
11 Sep 3:21
11 Sep 13:17
11 Sep 23:13
12 Sep 9:09
12 Sep 19:04
13 Sep 5:00
13 Sep 14:56
14 Sep 0:52
14 Sep 10:48
14 Sep 20:43
15 Sep 6:39
15 Sep 16:35
16 Sep 2:31
16 Sep 12:26
16 Sep 22:22
17 Sep 8:18
17 Sep 18:14
18 Sep 4:10
18 Sep 14:05
19 Sep 0:01
19 Sep 9:57
19 Sep 19:53
20 Sep 5:48
20 Sep 15:44
21 Sep 1:40
21 Sep 11:36
21 Sep 21:32
22 Sep 7:27
22 Sep 17:23
23 Sep 3:19
23 Sep 13:15
23 Sep 23:10
24 Sep 9:06
24 Sep 19:02
25 Sep 4:58
25 Sep 14:53
26 Sep 0:49
26 Sep 10:45
26 Sep 20:41
27 Sep 6:36
27 Sep 16:32
28 Sep 2:28
28 Sep 12:24
28 Sep 22:19
29 Sep 8:15
29 Sep 18:11
30 Sep 4:07
30 Sep 14:02
30 Sep 23:58
1 Oct 9:54
1 Oct 19:50
2 Oct 5:46
2 Oct 15:41
3 Oct 1:37
3 Oct 11:33
3 Oct 21:29
4 Oct 7:24
4 Oct 17:20
5 Oct 3:16
5 Oct 13:12
5 Oct 23:07
6 Oct 9:03
6 Oct 18:59
7 Oct 4:54
7 Oct 14:50
8 Oct 0:46
8 Oct 10:42
8 Oct 20:37
9 Oct 6:33
9 Oct 16:29
10 Oct 2:25
10 Oct 12:20
10 Oct 22:16
11 Oct 8:12
11 Oct 18:08
12 Oct 4:03
12 Oct 13:59
12 Oct 23:55
13 Oct 9:51
13 Oct 19:46
14 Oct 5:42
14 Oct 15:38
15 Oct 1:34
15 Oct 11:29
15 Oct 21:25
16 Oct 7:21
16 Oct 17:16
17 Oct 3:12
17 Oct 13:08
17 Oct 23:04
18 Oct 8:59
18 Oct 18:55
19 Oct 4:51
19 Oct 14:47
20 Oct 0:42
20 Oct 10:38
20 Oct 20:34
21 Oct 6:29
21 Oct 16:25
22 Oct 2:21
22 Oct 12:17
22 Oct 22:12
23 Oct 8:08
23 Oct 18:04
24 Oct 3:59
24 Oct 13:55
24 Oct 23:51
25 Oct 9:47
25 Oct 19:42
26 Oct 5:38
26 Oct 15:34
27 Oct 1:29
27 Oct 11:25
27 Oct 21:21
28 Oct 7:17
28 Oct 17:12
29 Oct 3:08
29 Oct 13:04
29 Oct 22:59
30 Oct 8:55
30 Oct 18:51
31 Oct 4:46
31 Oct 14:42
1 Nov 0:38
1 Nov 10:34
1 Nov 20:29
2 Nov 6:25
2 Nov 16:21
3 Nov 2:16
3 Nov 12:12
3 Nov 22:08
4 Nov 8:03
4 Nov 17:59
5 Nov 3:55
5 Nov 13:51
5 Nov 23:46
6 Nov 9:42
6 Nov 19:38
7 Nov 5:33
7 Nov 15:29
8 Nov 1:25
8 Nov 11:20
8 Nov 21:16
9 Nov 7:12
9 Nov 17:07
10 Nov 3:03
10 Nov 12:59
10 Nov 22:54
11 Nov 8:50
11 Nov 18:46
12 Nov 4:42
12 Nov 14:37
13 Nov 0:33
13 Nov 10:29
13 Nov 20:24
14 Nov 6:20
14 Nov 16:16
15 Nov 2:11
15 Nov 12:07
15 Nov 22:03
16 Nov 7:58
16 Nov 17:54
17 Nov 3:50
17 Nov 13:45
17 Nov 23:41
18 Nov 9:37
18 Nov 19:32
19 Nov 5:28
19 Nov 15:24
20 Nov 1:19
20 Nov 11:15
20 Nov 21:11
21 Nov 7:06
21 Nov 17:02
22 Nov 2:58
22 Nov 12:53
22 Nov 22:49
23 Nov 8:45
23 Nov 18:40
24 Nov 4:36
24 Nov 14:32
25 Nov 0:27
25 Nov 10:23
25 Nov 20:19
26 Nov 6:14
26 Nov 16:10
27 Nov 2:06
27 Nov 12:01
27 Nov 21:57
28 Nov 7:52
28 Nov 17:48
29 Nov 3:44
29 Nov 13:39
29 Nov 23:35
30 Nov 9:31
30 Nov 19:26
1 Dec 5:22
1 Dec 15:18
2 Dec 1:13
2 Dec 11:09
2 Dec 21:05
3 Dec 7:00
3 Dec 16:56
4 Dec 2:51
4 Dec 12:47
4 Dec 22:43
5 Dec 8:38
5 Dec 18:34
6 Dec 4:30
6 Dec 14:25
7 Dec 0:21
7 Dec 10:17
7 Dec 20:12
8 Dec 6:08
8 Dec 16:03
9 Dec 1:59
9 Dec 11:55
9 Dec 21:50
10 Dec 7:46
10 Dec 17:42
11 Dec 3:37
11 Dec 13:33
11 Dec 23:28
12 Dec 9:24
12 Dec 19:20
13 Dec 5:15
13 Dec 15:11
14 Dec 1:07
14 Dec 11:02
14 Dec 20:58
15 Dec 6:53
15 Dec 16:49
16 Dec 2:45
16 Dec 12:40
16 Dec 22:36
17 Dec 8:31
17 Dec 18:27
18 Dec 4:23
18 Dec 14:18
19 Dec 0:14
19 Dec 10:10
19 Dec 20:05
20 Dec 6:01
20 Dec 15:56
21 Dec 1:52
21 Dec 11:48
21 Dec 21:43
22 Dec 7:39
22 Dec 17:34
23 Dec 3:30
23 Dec 13:26
23 Dec 23:21
24 Dec 9:17
24 Dec 19:12
25 Dec 5:08
25 Dec 15:04
26 Dec 0:59
26 Dec 10:55
26 Dec 20:50
27 Dec 6:46
27 Dec 16:42
28 Dec 2:37
28 Dec 12:33
28 Dec 22:28
29 Dec 8:24
29 Dec 18:20
30 Dec 4:15
30 Dec 14:11
31 Dec 0:06
31 Dec 10:02
31 Dec 19:58