Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and METOP-B Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/30/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (METOP-B) | Time (METOP-B) | Lat,Lon (METOP-B) | SZA (METOP-B ) | Distance(km) | Time Diff (sec) |
| 1 | 10/06/2025 | 03:55:46 | 74.98, 107.62 | 80.34 | 10/06/2025 | 03:56:53 | 74.92, 110.16 | 80.16 | 73.69 | 67 |
| 2 | 10/06/2025 | 04:46:28 | -74.90, -84.84 | 99.74 | 10/06/2025 | 04:47:37 | -74.85, -82.71 | 99.89 | 62.14 | 69 |
| 3 | 10/06/2025 | 05:37:09 | 74.65, 83.16 | 80.00 | 10/06/2025 | 05:38:21 | 74.61, 83.99 | 79.92 | 24.68 | 72 |
| 4 | 10/06/2025 | 06:27:52 | -74.62,-109.45 | 100.02 | 10/06/2025 | 06:29:05 | -74.54,-108.88 | 100.14 | 19.09 | 73 |
| 5 | 10/06/2025 | 07:18:35 | 74.46, 58.28 | 79.82 | 10/06/2025 | 07:19:46 | 74.45, 58.22 | 79.80 | 2.62 | 71 |
| 6 | 10/06/2025 | 08:09:19 | -74.49,-134.46 | 100.14 | 10/06/2025 | 08:10:28 | -74.48,-134.39 | 100.17 | 2.31 | 69 |
| 7 | 10/06/2025 | 09:00:05 | 74.47, 32.89 | 79.86 | 10/06/2025 | 09:01:07 | 74.48, 32.96 | 79.85 | 2.47 | 62 |
| 8 | 10/06/2025 | 09:50:48 | -74.45,-159.73 | 100.16 | 10/06/2025 | 09:51:50 | -74.46,-159.77 | 100.16 | 1.99 | 62 |
| 9 | 10/06/2025 | 10:41:35 | 74.48, 7.49 | 79.90 | 10/06/2025 | 10:42:29 | 74.47, 7.58 | 79.87 | 3.33 | 54 |
| 10 | 10/06/2025 | 11:32:18 | -74.46, 174.88 | 100.12 | 10/06/2025 | 11:33:12 | -74.44, 174.85 | 100.14 | 1.61 | 54 |
| 11 | 10/06/2025 | 12:23:04 | 74.44, -17.78 | 79.88 | 10/06/2025 | 12:23:51 | 74.45, -17.80 | 79.88 | 0.97 | 47 |
| 12 | 10/06/2025 | 13:13:48 | -74.46, 149.48 | 100.09 | 10/06/2025 | 13:14:33 | -74.48, 149.59 | 100.09 | 3.55 | 45 |
| 13 | 10/06/2025 | 14:04:34 | 74.45, -43.18 | 79.92 | 10/06/2025 | 14:05:13 | 74.43, -43.18 | 79.89 | 2.06 | 39 |
| 14 | 10/06/2025 | 14:55:17 | -74.42, 124.21 | 100.10 | 10/06/2025 | 14:55:55 | -74.46, 124.21 | 100.08 | 3.95 | 38 |
| 15 | 10/06/2025 | 15:46:03 | 74.41, -68.45 | 79.90 | 10/06/2025 | 15:46:35 | 74.42, -68.57 | 79.90 | 3.61 | 32 |
| 16 | 10/06/2025 | 16:36:47 | -74.43, 98.81 | 100.07 | 10/06/2025 | 16:37:17 | -74.44, 98.83 | 100.06 | 1.23 | 30 |
| 17 | 10/06/2025 | 17:27:33 | 74.42, -93.85 | 79.94 | 10/06/2025 | 17:27:56 | 74.45, -93.82 | 79.96 | 3.29 | 23 |
| 18 | 10/06/2025 | 18:18:17 | -74.44, 73.42 | 100.03 | 10/06/2025 | 18:18:39 | -74.43, 73.44 | 100.05 | 1.81 | 22 |
| 19 | 10/06/2025 | 19:09:03 | 74.43,-119.24 | 79.97 | 10/06/2025 | 19:09:18 | 74.43,-119.21 | 79.97 | 1.20 | 15 |
| 20 | 10/06/2025 | 19:59:46 | -74.40, 48.15 | 100.05 | 10/06/2025 | 20:00:01 | -74.41, 48.06 | 100.04 | 2.71 | 15 |
| 21 | 10/06/2025 | 20:50:33 | 74.44,-144.64 | 80.01 | 10/06/2025 | 20:50:40 | 74.42,-144.59 | 79.98 | 2.85 | 7 |
| 22 | 10/06/2025 | 21:41:16 | -74.41, 22.75 | 100.01 | 10/06/2025 | 21:41:23 | -74.40, 22.68 | 100.03 | 2.72 | 7 |
| 23 | 10/06/2025 | 22:32:02 | 74.40,-169.91 | 79.99 | 10/06/2025 | 22:32:02 | 74.40,-169.97 | 80.00 | 1.81 | 0 |
| 24 | 10/06/2025 | 23:22:46 | -74.42, -2.65 | 99.98 | 10/06/2025 | 23:22:44 | -74.43, -2.58 | 99.97 | 2.32 | 2 |
| 25 | 10/07/2025 | 00:13:32 | 74.41, 164.69 | 80.03 | 10/07/2025 | 00:13:24 | 74.38, 164.65 | 80.01 | 2.90 | 8 |
| 26 | 10/07/2025 | 01:04:16 | -74.43, -28.05 | 99.94 | 10/07/2025 | 01:04:06 | -74.41, -27.96 | 99.96 | 3.24 | 10 |
| 27 | 10/07/2025 | 01:55:02 | 74.42, 139.29 | 80.07 | 10/07/2025 | 01:54:45 | 74.42, 139.39 | 80.06 | 2.88 | 17 |
| 28 | 10/07/2025 | 02:45:45 | -74.39, -53.32 | 99.96 | 10/07/2025 | 02:45:28 | -74.40, -53.34 | 99.95 | 1.01 | 17 |
| 29 | 10/07/2025 | 03:36:31 | 74.38, 114.02 | 80.05 | 10/07/2025 | 03:36:07 | 74.40, 114.01 | 80.08 | 2.73 | 24 |
| 30 | 10/07/2025 | 04:27:15 | -74.40, -78.71 | 99.92 | 10/07/2025 | 04:26:50 | -74.38, -78.72 | 99.93 | 2.13 | 25 |
| 31 | 10/07/2025 | 05:18:01 | 74.39, 88.63 | 80.09 | 10/07/2025 | 05:17:29 | 74.38, 88.63 | 80.09 | 0.13 | 32 |
| 32 | 10/07/2025 | 06:08:44 | -74.36,-103.98 | 99.94 | 10/07/2025 | 06:08:12 | -74.36,-104.11 | 99.92 | 3.66 | 32 |
| 33 | 10/07/2025 | 06:59:31 | 74.39, 63.23 | 80.12 | 10/07/2025 | 06:58:51 | 74.37, 63.24 | 80.10 | 2.97 | 40 |
| 34 | 10/07/2025 | 07:50:14 | -74.37,-129.38 | 99.90 | 10/07/2025 | 07:49:33 | -74.40,-129.36 | 99.87 | 3.19 | 41 |
| 35 | 10/07/2025 | 08:41:00 | 74.36, 37.96 | 80.10 | 10/07/2025 | 08:40:13 | 74.35, 37.86 | 80.11 | 2.95 | 47 |
| 36 | 10/07/2025 | 09:31:44 | -74.38,-154.78 | 99.86 | 10/07/2025 | 09:30:55 | -74.38,-154.74 | 99.85 | 1.09 | 49 |
| 37 | 10/07/2025 | 10:22:30 | 74.36, 12.56 | 80.14 | 10/07/2025 | 10:21:34 | 74.38, 12.61 | 80.17 | 2.64 | 56 |
| 38 | 10/07/2025 | 11:13:14 | -74.39, 179.82 | 99.83 | 10/07/2025 | 11:12:17 | -74.36, 179.87 | 99.84 | 2.89 | 57 |
| 39 | 10/07/2025 | 12:04:00 | 74.37, -12.84 | 80.18 | 10/07/2025 | 12:02:56 | 74.37, -12.78 | 80.18 | 1.82 | 64 |
| 40 | 10/07/2025 | 12:54:43 | -74.35, 154.55 | 99.84 | 10/07/2025 | 12:53:39 | -74.35, 154.49 | 99.83 | 1.84 | 64 |
| 41 | 10/07/2025 | 13:45:29 | 74.33, -38.11 | 80.16 | 10/07/2025 | 13:44:18 | 74.35, -38.16 | 80.19 | 2.63 | 71 |
| 42 | 10/07/2025 | 14:36:13 | -74.36, 129.16 | 99.81 | 10/07/2025 | 14:35:01 | -74.33, 129.11 | 99.82 | 3.01 | 72 |
| 43 | 10/07/2025 | 15:26:56 | 74.20, -63.13 | 80.04 | 10/07/2025 | 15:25:43 | 74.19, -63.92 | 80.08 | 23.86 | 73 |
| 44 | 10/07/2025 | 16:17:39 | -74.17, 104.26 | 99.98 | 10/07/2025 | 16:16:26 | -74.17, 103.36 | 99.93 | 27.32 | 73 |
| 45 | 10/07/2025 | 17:08:19 | 73.86, -87.67 | 79.70 | 10/07/2025 | 17:07:11 | 73.87, -90.02 | 79.83 | 72.64 | 68 |
| 46 | 10/07/2025 | 17:59:02 | -73.83, 79.71 | 100.32 | 10/07/2025 | 17:57:54 | -73.86, 77.25 | 100.18 | 75.93 | 68 |
Figure of NOAA-21 and METOP-B satellite orbits during SNOs since TLE Epoch: 9/30/2025
Download SNOs between NOAA-21 and METOP-B since TLE EPOCH: 09/30/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and METOP-B