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: 7/13/2025
| 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 | -73.47, -97.18 | 126.85 | 07/20/2025 | 05:50:57 | -73.38, -94.23 | 127.12 | 94.29 | 66 |
| 2 | 07/20/2025 | 06:40:32 | 73.24, 70.65 | 52.90 | 07/20/2025 | 06:41:40 | 73.19, 72.69 | 52.72 | 65.65 | 68 |
| 3 | 07/20/2025 | 07:31:14 | -73.13,-121.78 | 127.22 | 07/20/2025 | 07:32:24 | -73.11,-120.17 | 127.35 | 52.27 | 70 |
| 4 | 07/20/2025 | 08:21:56 | 72.94, 45.92 | 52.58 | 07/20/2025 | 08:23:08 | 72.87, 46.65 | 52.45 | 25.14 | 72 |
| 5 | 07/20/2025 | 09:12:38 | -72.83,-146.52 | 127.54 | 07/20/2025 | 09:13:52 | -72.79,-146.20 | 127.62 | 11.76 | 74 |
| 6 | 07/20/2025 | 10:03:22 | 72.75, 20.97 | 52.38 | 07/20/2025 | 10:04:32 | 72.75, 21.05 | 52.35 | 2.81 | 70 |
| 7 | 07/20/2025 | 10:54:06 | -72.73,-171.69 | 127.63 | 07/20/2025 | 10:55:15 | -72.72,-171.69 | 127.67 | 2.16 | 69 |
| 8 | 07/20/2025 | 11:44:51 | 72.70, -4.31 | 52.34 | 07/20/2025 | 11:45:54 | 72.72, -4.33 | 52.35 | 2.80 | 63 |
| 9 | 07/20/2025 | 12:35:35 | -72.69, 163.03 | 127.67 | 07/20/2025 | 12:36:37 | -72.69, 162.93 | 127.68 | 3.31 | 62 |
| 10 | 07/20/2025 | 13:26:21 | 72.70, -29.69 | 52.36 | 07/20/2025 | 13:27:16 | 72.70, -29.72 | 52.34 | 0.85 | 55 |
| 11 | 07/20/2025 | 14:17:05 | -72.69, 137.64 | 127.65 | 07/20/2025 | 14:17:58 | -72.72, 137.65 | 127.64 | 3.32 | 53 |
| 12 | 07/20/2025 | 15:07:51 | 72.71, -55.08 | 52.37 | 07/20/2025 | 15:08:38 | 72.68, -55.10 | 52.34 | 3.31 | 47 |
| 13 | 07/20/2025 | 15:58:35 | -72.70, 112.26 | 127.64 | 07/20/2025 | 15:59:20 | -72.70, 112.26 | 127.64 | 0.43 | 45 |
| 14 | 07/20/2025 | 16:49:21 | 72.71, -80.46 | 52.39 | 07/20/2025 | 16:49:59 | 72.71, -80.39 | 52.37 | 2.54 | 38 |
| 15 | 07/20/2025 | 17:40:05 | -72.70, 86.88 | 127.62 | 07/20/2025 | 17:40:42 | -72.68, 86.88 | 127.65 | 2.47 | 37 |
| 16 | 07/20/2025 | 18:30:50 | 72.66,-105.74 | 52.35 | 07/20/2025 | 18:31:21 | 72.68,-105.77 | 52.37 | 2.47 | 31 |
| 17 | 07/20/2025 | 19:21:35 | -72.70, 61.50 | 127.60 | 07/20/2025 | 19:22:03 | -72.71, 61.60 | 127.61 | 3.34 | 28 |
| 18 | 07/20/2025 | 20:12:20 | 72.67,-131.12 | 52.37 | 07/20/2025 | 20:12:43 | 72.66,-131.16 | 52.36 | 1.33 | 23 |
| 19 | 07/20/2025 | 21:03:04 | -72.66, 36.22 | 127.64 | 07/20/2025 | 21:03:25 | -72.68, 36.21 | 127.62 | 3.00 | 21 |
| 20 | 07/20/2025 | 21:53:50 | 72.67,-156.51 | 52.39 | 07/20/2025 | 21:54:04 | 72.69,-156.44 | 52.40 | 3.02 | 14 |
| 21 | 07/20/2025 | 22:44:34 | -72.66, 10.83 | 127.62 | 07/20/2025 | 22:44:47 | -72.66, 10.83 | 127.62 | 0.28 | 13 |
| 22 | 07/20/2025 | 23:35:20 | 72.68, 178.11 | 52.41 | 07/20/2025 | 23:35:26 | 72.67, 178.18 | 52.40 | 2.38 | 6 |
| 23 | 07/21/2025 | 00:26:04 | -72.67, -14.55 | 127.60 | 07/21/2025 | 00:26:09 | -72.64, -14.56 | 127.63 | 2.83 | 5 |
| 24 | 07/21/2025 | 01:16:49 | 72.63, 152.83 | 52.37 | 07/21/2025 | 01:16:48 | 72.65, 152.79 | 52.39 | 2.22 | 1 |
| 25 | 07/21/2025 | 02:07:34 | -72.67, -39.93 | 127.58 | 07/21/2025 | 02:07:30 | -72.67, -39.84 | 127.59 | 3.04 | 4 |
| 26 | 07/21/2025 | 02:58:19 | 72.63, 127.45 | 52.39 | 07/21/2025 | 02:58:10 | 72.62, 127.41 | 52.38 | 1.85 | 9 |
| 27 | 07/21/2025 | 03:49:03 | -72.62, -65.21 | 127.62 | 07/21/2025 | 03:48:52 | -72.65, -65.22 | 127.59 | 2.69 | 11 |
| 28 | 07/21/2025 | 04:39:49 | 72.64, 102.07 | 52.41 | 07/21/2025 | 04:39:31 | 72.65, 102.13 | 52.42 | 2.49 | 18 |
| 29 | 07/21/2025 | 05:30:33 | -72.63, -90.59 | 127.60 | 07/21/2025 | 05:30:14 | -72.62, -90.61 | 127.60 | 0.60 | 19 |
| 30 | 07/21/2025 | 06:21:19 | 72.64, 76.68 | 52.43 | 07/21/2025 | 06:20:53 | 72.63, 76.74 | 52.42 | 2.38 | 26 |
| 31 | 07/21/2025 | 07:12:03 | -72.63,-115.98 | 127.59 | 07/21/2025 | 07:11:36 | -72.60,-115.99 | 127.61 | 3.22 | 27 |
| 32 | 07/21/2025 | 08:02:48 | 72.60, 51.40 | 52.39 | 07/21/2025 | 08:02:15 | 72.61, 51.36 | 52.41 | 2.06 | 33 |
| 33 | 07/21/2025 | 08:53:33 | -72.63,-141.36 | 127.57 | 07/21/2025 | 08:52:57 | -72.63,-141.28 | 127.57 | 2.79 | 36 |
| 34 | 07/21/2025 | 09:44:18 | 72.60, 26.02 | 52.41 | 07/21/2025 | 09:43:37 | 72.59, 25.97 | 52.41 | 2.38 | 41 |
| 35 | 07/21/2025 | 10:35:02 | -72.59,-166.64 | 127.60 | 07/21/2025 | 10:34:19 | -72.61,-166.66 | 127.57 | 2.42 | 43 |
| 36 | 07/21/2025 | 11:25:48 | 72.61, 0.64 | 52.43 | 07/21/2025 | 11:24:58 | 72.61, 0.69 | 52.44 | 1.99 | 50 |
| 37 | 07/21/2025 | 12:16:32 | -72.59, 167.98 | 127.59 | 07/21/2025 | 12:15:41 | -72.59, 167.96 | 127.58 | 1.01 | 51 |
| 38 | 07/21/2025 | 13:07:18 | 72.61, -24.75 | 52.44 | 07/21/2025 | 13:06:20 | 72.59, -24.70 | 52.44 | 2.52 | 58 |
| 39 | 07/21/2025 | 13:58:02 | -72.60, 142.60 | 127.57 | 07/21/2025 | 13:57:02 | -72.61, 142.67 | 127.54 | 3.33 | 60 |
| 40 | 07/21/2025 | 14:48:47 | 72.56, -50.03 | 52.41 | 07/21/2025 | 14:47:42 | 72.57, -50.08 | 52.43 | 2.04 | 65 |
| 41 | 07/21/2025 | 15:39:32 | -72.60, 117.21 | 127.55 | 07/21/2025 | 15:38:24 | -72.59, 117.29 | 127.54 | 2.62 | 68 |
| 42 | 07/21/2025 | 16:30:17 | 72.57, -75.41 | 52.42 | 07/21/2025 | 16:29:04 | 72.55, -75.47 | 52.43 | 2.91 | 73 |
| 43 | 07/21/2025 | 17:21:01 | -72.55, 91.93 | 127.59 | 07/21/2025 | 17:19:46 | -72.57, 91.90 | 127.55 | 2.18 | 75 |
| 44 | 07/21/2025 | 18:11:42 | 72.32,-100.28 | 52.16 | 07/21/2025 | 18:10:30 | 72.32,-101.26 | 52.24 | 33.00 | 72 |
| 45 | 07/21/2025 | 19:02:25 | -72.25, 67.16 | 127.90 | 07/21/2025 | 19:01:14 | -72.24, 65.91 | 127.82 | 42.20 | 71 |
| 46 | 07/21/2025 | 19:53:06 | 72.01,-125.07 | 51.85 | 07/21/2025 | 19:51:58 | 71.99,-127.23 | 51.98 | 74.44 | 68 |
| 47 | 07/21/2025 | 20:43:49 | -71.95, 42.36 | 128.22 | 07/21/2025 | 20:42:41 | -71.96, 40.04 | 128.04 | 79.99 | 68 |
Figure of NOAA-21 and METOP-C satellite orbits during SNOs since TLE Epoch: 7/13/2025
Download SNOs between NOAA-21 and METOP-C since TLE EPOCH: 07/13/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and METOP-C