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: 9/27/2025
| 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 | 74.97, 107.64 | 80.34 | 10/06/2025 | 03:56:53 | 74.93, 110.19 | 80.17 | 73.91 | 67 |
| 2 | 10/06/2025 | 04:46:28 | -74.90, -84.82 | 99.74 | 10/06/2025 | 04:47:37 | -74.86, -82.68 | 99.88 | 62.37 | 69 |
| 3 | 10/06/2025 | 05:37:09 | 74.65, 83.18 | 80.00 | 10/06/2025 | 05:38:21 | 74.62, 84.01 | 79.92 | 24.80 | 72 |
| 4 | 10/06/2025 | 06:27:52 | -74.62,-109.43 | 100.03 | 10/06/2025 | 06:29:05 | -74.55,-108.85 | 100.13 | 18.57 | 73 |
| 5 | 10/06/2025 | 07:18:35 | 74.46, 58.30 | 79.82 | 10/06/2025 | 07:19:46 | 74.46, 58.24 | 79.81 | 1.58 | 71 |
| 6 | 10/06/2025 | 08:09:19 | -74.48,-134.44 | 100.15 | 10/06/2025 | 08:10:28 | -74.49,-134.36 | 100.16 | 2.56 | 69 |
| 7 | 10/06/2025 | 09:00:05 | 74.47, 32.90 | 79.85 | 10/06/2025 | 09:01:08 | 74.44, 32.86 | 79.82 | 3.09 | 63 |
| 8 | 10/06/2025 | 09:50:49 | -74.49,-159.83 | 100.11 | 10/06/2025 | 09:51:50 | -74.47,-159.74 | 100.15 | 3.39 | 61 |
| 9 | 10/06/2025 | 10:41:35 | 74.48, 7.50 | 79.89 | 10/06/2025 | 10:42:29 | 74.48, 7.61 | 79.88 | 3.12 | 54 |
| 10 | 10/06/2025 | 11:32:18 | -74.45, 174.90 | 100.13 | 10/06/2025 | 11:33:12 | -74.46, 174.88 | 100.13 | 0.95 | 54 |
| 11 | 10/06/2025 | 12:23:04 | 74.44, -17.77 | 79.87 | 10/06/2025 | 12:23:51 | 74.46, -17.77 | 79.89 | 2.46 | 47 |
| 12 | 10/06/2025 | 13:13:48 | -74.46, 149.50 | 100.10 | 10/06/2025 | 13:14:34 | -74.44, 149.50 | 100.12 | 1.94 | 46 |
| 13 | 10/06/2025 | 14:04:34 | 74.45, -43.16 | 79.91 | 10/06/2025 | 14:05:13 | 74.44, -43.16 | 79.90 | 0.37 | 39 |
| 14 | 10/06/2025 | 14:55:17 | -74.42, 124.23 | 100.11 | 10/06/2025 | 14:55:56 | -74.42, 124.12 | 100.11 | 3.48 | 39 |
| 15 | 10/06/2025 | 15:46:04 | 74.45, -68.56 | 79.95 | 10/06/2025 | 15:46:35 | 74.43, -68.54 | 79.91 | 3.15 | 31 |
| 16 | 10/06/2025 | 16:36:47 | -74.43, 98.83 | 100.08 | 10/06/2025 | 16:37:17 | -74.46, 98.86 | 100.05 | 3.47 | 30 |
| 17 | 10/06/2025 | 17:27:33 | 74.42, -93.83 | 79.93 | 10/06/2025 | 17:27:57 | 74.41, -93.92 | 79.93 | 2.76 | 24 |
| 18 | 10/06/2025 | 18:18:17 | -74.44, 73.44 | 100.04 | 10/06/2025 | 18:18:39 | -74.44, 73.48 | 100.04 | 1.42 | 22 |
| 19 | 10/06/2025 | 19:09:03 | 74.42,-119.23 | 79.97 | 10/06/2025 | 19:09:18 | 74.44,-119.18 | 79.98 | 2.70 | 15 |
| 20 | 10/06/2025 | 19:59:47 | -74.44, 48.04 | 100.00 | 10/06/2025 | 20:00:01 | -74.42, 48.10 | 100.03 | 2.75 | 14 |
| 21 | 10/06/2025 | 20:50:33 | 74.43,-144.62 | 80.00 | 10/06/2025 | 20:50:40 | 74.43,-144.56 | 79.99 | 2.04 | 7 |
| 22 | 10/06/2025 | 21:41:16 | -74.40, 22.77 | 100.02 | 10/06/2025 | 21:41:23 | -74.41, 22.71 | 100.02 | 1.69 | 7 |
| 23 | 10/06/2025 | 22:32:02 | 74.39,-169.89 | 79.99 | 10/06/2025 | 22:32:02 | 74.41,-169.94 | 80.01 | 2.52 | 0 |
| 24 | 10/06/2025 | 23:22:46 | -74.41, -2.63 | 99.98 | 10/06/2025 | 23:22:45 | -74.39, -2.67 | 100.00 | 2.54 | 1 |
| 25 | 10/07/2025 | 00:13:32 | 74.40, 164.71 | 80.02 | 10/07/2025 | 00:13:24 | 74.40, 164.68 | 80.02 | 1.16 | 8 |
| 26 | 10/07/2025 | 01:04:16 | -74.42, -28.03 | 99.95 | 10/07/2025 | 01:04:06 | -74.43, -27.92 | 99.95 | 3.09 | 10 |
| 27 | 10/07/2025 | 01:55:02 | 74.41, 139.31 | 80.06 | 10/07/2025 | 01:54:46 | 74.38, 139.30 | 80.03 | 3.49 | 16 |
| 28 | 10/07/2025 | 02:45:45 | -74.38, -53.30 | 99.96 | 10/07/2025 | 02:45:28 | -74.41, -53.31 | 99.93 | 3.04 | 17 |
| 29 | 10/07/2025 | 03:36:32 | 74.42, 113.91 | 80.10 | 10/07/2025 | 03:36:07 | 74.41, 114.04 | 80.09 | 3.83 | 25 |
| 30 | 10/07/2025 | 04:27:15 | -74.39, -78.69 | 99.93 | 10/07/2025 | 04:26:50 | -74.39, -78.69 | 99.92 | 0.32 | 25 |
| 31 | 10/07/2025 | 05:18:01 | 74.38, 88.64 | 80.08 | 10/07/2025 | 05:17:29 | 74.40, 88.66 | 80.10 | 1.88 | 32 |
| 32 | 10/07/2025 | 06:08:45 | -74.40,-104.09 | 99.89 | 10/07/2025 | 06:08:12 | -74.38,-104.07 | 99.91 | 2.59 | 33 |
| 33 | 10/07/2025 | 06:59:31 | 74.39, 63.25 | 80.11 | 10/07/2025 | 06:58:51 | 74.38, 63.28 | 80.11 | 1.27 | 40 |
| 34 | 10/07/2025 | 07:50:14 | -74.36,-129.36 | 99.91 | 10/07/2025 | 07:49:34 | -74.36,-129.45 | 99.90 | 2.70 | 40 |
| 35 | 10/07/2025 | 08:41:00 | 74.35, 37.98 | 80.10 | 10/07/2025 | 08:40:13 | 74.36, 37.89 | 80.12 | 3.01 | 47 |
| 36 | 10/07/2025 | 09:31:44 | -74.37,-154.76 | 99.87 | 10/07/2025 | 09:30:55 | -74.39,-154.71 | 99.84 | 3.17 | 49 |
| 37 | 10/07/2025 | 10:22:30 | 74.36, 12.58 | 80.13 | 10/07/2025 | 10:21:35 | 74.35, 12.51 | 80.14 | 2.32 | 55 |
| 38 | 10/07/2025 | 11:13:14 | -74.38, 179.84 | 99.84 | 10/07/2025 | 11:12:17 | -74.38, 179.91 | 99.83 | 1.98 | 57 |
| 39 | 10/07/2025 | 12:04:00 | 74.37, -12.82 | 80.17 | 10/07/2025 | 12:02:56 | 74.38, -12.74 | 80.19 | 2.69 | 64 |
| 40 | 10/07/2025 | 12:54:43 | -74.34, 154.57 | 99.85 | 10/07/2025 | 12:53:39 | -74.36, 154.53 | 99.82 | 2.95 | 64 |
| 41 | 10/07/2025 | 13:45:30 | 74.38, -38.22 | 80.21 | 10/07/2025 | 13:44:18 | 74.36, -38.13 | 80.20 | 2.93 | 72 |
| 42 | 10/07/2025 | 14:36:13 | -74.35, 129.18 | 99.82 | 10/07/2025 | 14:35:01 | -74.35, 129.15 | 99.80 | 0.90 | 72 |
| 43 | 10/07/2025 | 15:26:56 | 74.19, -63.11 | 80.03 | 10/07/2025 | 15:25:43 | 74.20, -63.88 | 80.09 | 23.43 | 73 |
| 44 | 10/07/2025 | 16:17:39 | -74.16, 104.28 | 99.99 | 10/07/2025 | 16:16:26 | -74.18, 103.39 | 99.92 | 26.92 | 73 |
| 45 | 10/07/2025 | 17:08:19 | 73.85, -87.66 | 79.69 | 10/07/2025 | 17:07:11 | 73.89, -89.99 | 79.84 | 72.25 | 68 |
| 46 | 10/07/2025 | 17:59:02 | -73.83, 79.73 | 100.33 | 10/07/2025 | 17:57:54 | -73.87, 77.29 | 100.17 | 75.54 | 68 |
Figure of NOAA-21 and METOP-B satellite orbits during SNOs since TLE Epoch: 9/27/2025
Download SNOs between NOAA-21 and METOP-B since TLE EPOCH: 09/27/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and METOP-B