Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and METOP-C Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/3/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (METOP-C) Time (METOP-C) Lat,Lon (METOP-C) SZA (METOP-C ) Distance(km) Time Diff (sec)
1 09/10/2025 00:19:52 73.36, 165.56 68.56 09/10/2025 00:20:59 73.28, 168.07 68.37 80.69 67
2 09/10/2025 01:10:34 -73.25, -26.88 111.55 09/10/2025 01:11:43 -73.17, -24.84 111.73 66.06 69
3 09/10/2025 02:01:16 73.06, 140.84 68.26 09/10/2025 02:02:26 73.00, 142.14 68.14 42.79 70
4 09/10/2025 02:51:58 -72.96, -51.61 111.84 09/10/2025 02:53:10 -72.89, -50.77 111.95 28.49 72
5 09/10/2025 03:42:40 72.77, 116.09 67.97 09/10/2025 03:43:53 72.73, 116.22 67.91 6.10 73
6 09/10/2025 04:33:23 -72.71, -76.47 112.08 09/10/2025 04:34:35 -72.72, -76.47 112.08 1.06 72
7 09/10/2025 05:24:09 72.73, 90.81 67.95 09/10/2025 05:25:15 72.71, 90.84 67.92 2.09 66
8 09/10/2025 06:14:53 -72.72,-101.86 112.05 09/10/2025 06:15:57 -72.70,-101.85 112.08 2.13 64
9 09/10/2025 07:05:38 72.68, 65.52 67.93 09/10/2025 07:06:37 72.69, 65.46 67.93 2.32 59
10 09/10/2025 07:56:22 -72.68,-127.15 112.07 09/10/2025 07:57:19 -72.68,-127.23 112.07 2.90 57
11 09/10/2025 08:47:08 72.69, 40.13 67.96 09/10/2025 08:47:59 72.67, 40.07 67.94 3.18 51
12 09/10/2025 09:37:52 -72.68,-152.54 112.03 09/10/2025 09:38:40 -72.71,-152.51 112.02 2.99 48
13 09/10/2025 10:28:38 72.70, 14.75 68.00 09/10/2025 10:29:20 72.70, 14.79 67.99 1.64 42
14 09/10/2025 11:19:22 -72.69,-177.93 112.00 09/10/2025 11:20:02 -72.69,-177.90 112.01 1.02 40
15 09/10/2025 12:10:07 72.65, -10.54 67.98 09/10/2025 12:10:42 72.68, -10.59 68.00 3.01 35
16 09/10/2025 13:00:51 -72.65, 156.79 112.02 09/10/2025 13:01:24 -72.67, 156.72 112.00 3.16 33
17 09/10/2025 13:51:37 72.66, -35.93 68.01 09/10/2025 13:52:04 72.65, -35.97 68.00 1.55 27
18 09/10/2025 14:42:21 -72.65, 131.40 111.99 09/10/2025 14:42:46 -72.65, 131.34 112.00 2.25 25
19 09/10/2025 15:33:07 72.67, -61.32 68.05 09/10/2025 15:33:25 72.68, -61.25 68.06 2.92 18
20 09/10/2025 16:23:51 -72.66, 106.01 111.95 09/10/2025 16:24:07 -72.68, 106.06 111.94 2.23 16
21 09/10/2025 17:14:37 72.67, -86.71 68.08 09/10/2025 17:14:47 72.66, -86.63 68.06 2.76 10
22 09/10/2025 18:05:21 -72.67, 80.62 111.92 09/10/2025 18:05:29 -72.65, 80.68 111.93 2.42 8
23 09/10/2025 18:56:06 72.63,-111.99 68.06 09/10/2025 18:56:09 72.64,-112.02 68.07 1.45 3
24 09/10/2025 19:46:50 -72.63, 55.34 111.94 09/10/2025 19:46:51 -72.63, 55.29 111.93 1.67 1
25 09/10/2025 20:37:36 72.64,-137.38 68.09 09/10/2025 20:37:31 72.62,-137.40 68.08 2.06 5
26 09/10/2025 21:28:20 -72.63, 29.95 111.90 09/10/2025 21:28:13 -72.61, 29.91 111.92 2.59 7
27 09/10/2025 22:19:06 72.65,-162.77 68.13 09/10/2025 22:18:52 72.65,-162.68 68.13 3.09 14
28 09/10/2025 23:09:50 -72.64, 4.56 111.87 09/10/2025 23:09:34 -72.64, 4.63 111.87 2.44 16
29 09/11/2025 00:00:35 72.60, 171.94 68.11 09/11/2025 00:00:14 72.63, 171.94 68.14 3.01 21
30 09/11/2025 00:51:19 -72.60, -20.73 111.89 09/11/2025 00:50:56 -72.62, -20.75 111.86 2.78 23
31 09/11/2025 01:42:05 72.61, 146.56 68.14 09/11/2025 01:41:36 72.61, 146.56 68.15 0.17 29
32 09/11/2025 02:32:49 -72.60, -46.12 111.85 09/11/2025 02:32:18 -72.60, -46.14 111.85 0.77 31
33 09/11/2025 03:23:35 72.62, 121.17 68.18 09/11/2025 03:22:58 72.59, 121.17 68.15 3.35 37
34 09/11/2025 04:14:19 -72.61, -71.51 111.82 09/11/2025 04:13:39 -72.63, -71.41 111.80 3.64 40
35 09/11/2025 05:05:04 72.57, 95.88 68.16 09/11/2025 05:04:20 72.56, 95.79 68.16 3.15 44
36 09/11/2025 05:55:49 -72.62, -96.90 111.79 09/11/2025 05:55:01 -72.61, -96.80 111.79 3.49 48
37 09/11/2025 06:46:34 72.58, 70.49 68.19 09/11/2025 06:45:41 72.59, 70.51 68.21 1.73 53
38 09/11/2025 07:37:18 -72.57,-122.18 111.81 09/11/2025 07:36:23 -72.59,-122.18 111.79 1.26 55
39 09/11/2025 08:28:04 72.59, 45.10 68.23 09/11/2025 08:27:03 72.57, 45.13 68.22 1.77 61
40 09/11/2025 09:18:48 -72.58,-147.57 111.77 09/11/2025 09:17:45 -72.57,-147.56 111.78 1.94 63
41 09/11/2025 10:09:33 72.54, 19.82 68.21 09/11/2025 10:08:25 72.55, 19.74 68.23 2.56 68
42 09/11/2025 11:00:17 -72.54,-172.86 111.79 09/11/2025 10:59:07 -72.54,-172.95 111.77 2.99 70
43 09/11/2025 11:51:02 72.50, -5.47 68.19 09/11/2025 11:49:48 72.48, -5.74 68.19 9.35 74
44 09/11/2025 12:41:44 -72.39, 162.06 111.92 09/11/2025 12:40:31 -72.42, 161.47 111.86 20.08 73
45 09/11/2025 13:32:26 72.20, -30.25 67.89 09/11/2025 13:31:15 72.20, -31.63 67.96 46.69 71
46 09/11/2025 14:23:09 -72.15, 137.17 112.16 09/11/2025 14:21:58 -72.14, 135.59 112.08 53.91 71
47 09/11/2025 15:13:50 71.90, -55.05 67.60 09/11/2025 15:12:43 71.87, -57.59 67.69 87.83 67
48 09/11/2025 16:04:32 -71.80, 112.46 112.50 09/11/2025 16:03:26 -71.81, 109.63 112.35 98.30 66

Figure of NOAA-21 and METOP-C satellite orbits during SNOs since TLE Epoch: 9/3/2025
SNOs_Map_NOAA-21_METOP-C_20250903.jpg

Download SNOs between NOAA-21 and METOP-C since TLE EPOCH: 09/03/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and METOP-C