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: 7/20/2025
| 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 | 07/20/2025 | 05:49:51 | -73.46, -97.14 | 126.87 | 07/20/2025 | 05:50:57 | -73.40, -94.18 | 127.10 | 94.01 | 66 |
| 2 | 07/20/2025 | 06:40:32 | 73.22, 70.71 | 52.87 | 07/20/2025 | 06:41:41 | 73.17, 72.64 | 52.70 | 62.23 | 69 |
| 3 | 07/20/2025 | 07:31:15 | -73.16,-121.85 | 127.19 | 07/20/2025 | 07:32:25 | -73.08,-120.23 | 127.38 | 53.09 | 70 |
| 4 | 07/20/2025 | 08:21:56 | 72.92, 45.98 | 52.55 | 07/20/2025 | 08:23:08 | 72.90, 46.71 | 52.47 | 23.91 | 72 |
| 5 | 07/20/2025 | 09:12:39 | -72.86,-146.59 | 127.50 | 07/20/2025 | 09:13:52 | -72.81,-146.16 | 127.60 | 15.61 | 73 |
| 6 | 07/20/2025 | 10:03:22 | 72.72, 21.02 | 52.35 | 07/20/2025 | 10:04:33 | 72.72, 21.00 | 52.33 | 0.63 | 71 |
| 7 | 07/20/2025 | 10:54:06 | -72.72,-171.66 | 127.65 | 07/20/2025 | 10:55:15 | -72.73,-171.65 | 127.65 | 1.98 | 69 |
| 8 | 07/20/2025 | 11:44:52 | 72.72, -4.36 | 52.37 | 07/20/2025 | 11:45:55 | 72.70, -4.38 | 52.33 | 2.82 | 63 |
| 9 | 07/20/2025 | 12:35:36 | -72.72, 162.96 | 127.64 | 07/20/2025 | 12:36:37 | -72.71, 162.97 | 127.66 | 0.99 | 61 |
| 10 | 07/20/2025 | 13:26:22 | 72.73, -29.75 | 52.38 | 07/20/2025 | 13:27:16 | 72.73, -29.66 | 52.37 | 2.72 | 54 |
| 11 | 07/20/2025 | 14:17:05 | -72.67, 137.68 | 127.67 | 07/20/2025 | 14:17:59 | -72.69, 137.58 | 127.66 | 3.70 | 54 |
| 12 | 07/20/2025 | 15:07:51 | 72.68, -55.02 | 52.35 | 07/20/2025 | 15:08:38 | 72.71, -55.05 | 52.36 | 2.80 | 47 |
| 13 | 07/20/2025 | 15:58:35 | -72.68, 112.30 | 127.65 | 07/20/2025 | 15:59:21 | -72.67, 112.20 | 127.67 | 3.51 | 46 |
| 14 | 07/20/2025 | 16:49:21 | 72.69, -80.41 | 52.36 | 07/20/2025 | 16:50:00 | 72.68, -80.43 | 52.35 | 0.94 | 39 |
| 15 | 07/20/2025 | 17:40:05 | -72.68, 86.92 | 127.64 | 07/20/2025 | 17:40:42 | -72.70, 86.92 | 127.63 | 1.60 | 37 |
| 16 | 07/20/2025 | 18:30:51 | 72.69,-105.79 | 52.38 | 07/20/2025 | 18:31:22 | 72.66,-105.82 | 52.35 | 3.37 | 31 |
| 17 | 07/20/2025 | 19:21:35 | -72.69, 61.53 | 127.62 | 07/20/2025 | 19:22:04 | -72.68, 61.53 | 127.64 | 1.30 | 29 |
| 18 | 07/20/2025 | 20:12:21 | 72.69,-131.17 | 52.40 | 07/20/2025 | 20:12:43 | 72.69,-131.10 | 52.39 | 2.47 | 22 |
| 19 | 07/20/2025 | 21:03:05 | -72.69, 36.15 | 127.60 | 07/20/2025 | 21:03:25 | -72.70, 36.25 | 127.60 | 3.64 | 20 |
| 20 | 07/20/2025 | 21:53:50 | 72.65,-156.45 | 52.36 | 07/20/2025 | 21:54:05 | 72.67,-156.49 | 52.38 | 2.45 | 15 |
| 21 | 07/20/2025 | 22:44:35 | -72.69, 10.77 | 127.58 | 07/20/2025 | 22:44:47 | -72.68, 10.87 | 127.60 | 3.60 | 12 |
| 22 | 07/20/2025 | 23:35:19 | 72.65, 178.16 | 52.38 | 07/20/2025 | 23:35:26 | 72.65, 178.13 | 52.37 | 1.42 | 7 |
| 23 | 07/21/2025 | 00:26:03 | -72.65, -14.51 | 127.62 | 07/21/2025 | 00:26:08 | -72.66, -14.52 | 127.61 | 1.26 | 5 |
| 24 | 07/21/2025 | 01:16:49 | 72.66, 152.78 | 52.40 | 07/21/2025 | 01:16:47 | 72.67, 152.85 | 52.41 | 2.93 | 2 |
| 25 | 07/21/2025 | 02:07:33 | -72.65, -39.89 | 127.60 | 07/21/2025 | 02:07:30 | -72.64, -39.90 | 127.62 | 1.69 | 3 |
| 26 | 07/21/2025 | 02:58:19 | 72.66, 127.40 | 52.42 | 07/21/2025 | 02:58:09 | 72.65, 127.46 | 52.41 | 2.36 | 10 |
| 27 | 07/21/2025 | 03:49:03 | -72.66, -65.28 | 127.58 | 07/21/2025 | 03:48:51 | -72.67, -65.18 | 127.58 | 3.25 | 12 |
| 28 | 07/21/2025 | 04:39:48 | 72.61, 102.12 | 52.38 | 07/21/2025 | 04:39:31 | 72.63, 102.08 | 52.40 | 2.18 | 17 |
| 29 | 07/21/2025 | 05:30:33 | -72.66, -90.66 | 127.57 | 07/21/2025 | 05:30:13 | -72.64, -90.57 | 127.58 | 3.53 | 20 |
| 30 | 07/21/2025 | 06:21:18 | 72.62, 76.74 | 52.40 | 07/21/2025 | 06:20:53 | 72.61, 76.69 | 52.40 | 1.95 | 25 |
| 31 | 07/21/2025 | 07:12:02 | -72.61,-115.94 | 127.60 | 07/21/2025 | 07:11:35 | -72.62,-115.95 | 127.59 | 1.00 | 27 |
| 32 | 07/21/2025 | 08:02:48 | 72.62, 51.35 | 52.42 | 07/21/2025 | 08:02:14 | 72.64, 51.41 | 52.43 | 2.39 | 34 |
| 33 | 07/21/2025 | 08:53:32 | -72.62,-141.32 | 127.59 | 07/21/2025 | 08:52:57 | -72.60,-141.34 | 127.59 | 2.11 | 35 |
| 34 | 07/21/2025 | 09:44:18 | 72.63, 25.97 | 52.44 | 07/21/2025 | 09:43:36 | 72.61, 26.03 | 52.43 | 2.41 | 42 |
| 35 | 07/21/2025 | 10:35:02 | -72.62,-166.70 | 127.57 | 07/21/2025 | 10:34:18 | -72.63,-166.62 | 127.56 | 2.89 | 44 |
| 36 | 07/21/2025 | 11:25:47 | 72.58, 0.69 | 52.40 | 07/21/2025 | 11:24:58 | 72.59, 0.64 | 52.42 | 2.02 | 49 |
| 37 | 07/21/2025 | 12:16:31 | -72.58, 168.02 | 127.60 | 07/21/2025 | 12:15:40 | -72.61, 168.00 | 127.56 | 3.48 | 51 |
| 38 | 07/21/2025 | 13:07:17 | 72.58, -24.69 | 52.42 | 07/21/2025 | 13:06:20 | 72.57, -24.75 | 52.42 | 2.49 | 57 |
| 39 | 07/21/2025 | 13:58:01 | -72.58, 142.63 | 127.59 | 07/21/2025 | 13:57:02 | -72.58, 142.61 | 127.57 | 0.89 | 59 |
| 40 | 07/21/2025 | 14:48:47 | 72.59, -50.08 | 52.44 | 07/21/2025 | 14:47:41 | 72.60, -50.03 | 52.46 | 1.90 | 66 |
| 41 | 07/21/2025 | 15:39:31 | -72.58, 117.25 | 127.57 | 07/21/2025 | 15:38:24 | -72.56, 117.23 | 127.57 | 2.55 | 67 |
| 42 | 07/21/2025 | 16:30:17 | 72.59, -75.46 | 52.45 | 07/21/2025 | 16:29:03 | 72.57, -75.41 | 52.45 | 2.61 | 74 |
| 43 | 07/21/2025 | 17:21:00 | -72.54, 91.97 | 127.61 | 07/21/2025 | 17:19:46 | -72.54, 91.84 | 127.58 | 4.30 | 74 |
| 44 | 07/21/2025 | 18:11:41 | 72.29,-100.23 | 52.14 | 07/21/2025 | 18:10:30 | 72.30,-101.31 | 52.22 | 36.34 | 71 |
| 45 | 07/21/2025 | 19:02:25 | -72.29, 67.09 | 127.87 | 07/21/2025 | 19:01:13 | -72.26, 65.95 | 127.80 | 38.72 | 72 |
| 46 | 07/21/2025 | 19:53:05 | 71.99,-125.02 | 51.82 | 07/21/2025 | 19:51:57 | 72.02,-127.18 | 52.00 | 74.36 | 68 |
| 47 | 07/21/2025 | 20:43:48 | -71.93, 42.40 | 128.24 | 07/21/2025 | 20:42:40 | -71.98, 40.08 | 128.03 | 80.03 | 68 |
Figure of NOAA-21 and METOP-C satellite orbits during SNOs since TLE Epoch: 7/20/2025
Download SNOs between NOAA-21 and METOP-C since TLE EPOCH: 07/20/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and METOP-C