Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-20 and LANDSAT-8 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/20/2025
| Index | Date (NOAA-20) | Time (NOAA-20) | Lat,Lon (NOAA-20) | SZA (NOAA-20 ) | Date (LANDSAT-8) | Time (LANDSAT-8) | Lat,Lon (LANDSAT-8) | SZA (LANDSAT-8 ) | Distance(km) | Time Diff (sec) |
| 1 | 10/21/2025 | 07:35:00 | -70.05,-117.50 | 99.24 | 10/21/2025 | 07:35:44 | -70.06,-117.49 | 99.24 | 0.98 | 44 |
| 2 | 10/21/2025 | 08:25:44 | 69.92, 50.01 | 80.64 | 10/21/2025 | 08:25:12 | 69.90, 49.94 | 80.62 | 3.53 | 32 |
| 3 | 10/23/2025 | 23:01:27 | 70.49,-169.75 | 82.13 | 10/23/2025 | 23:02:37 | 70.38,-168.77 | 82.02 | 38.76 | 70 |
| 4 | 10/23/2025 | 23:52:01 | -69.98, -1.64 | 98.37 | 10/23/2025 | 23:52:12 | -69.99, -1.69 | 98.36 | 2.22 | 11 |
| 5 | 10/24/2025 | 00:42:46 | 69.90, 165.78 | 81.57 | 10/24/2025 | 00:41:39 | 69.89, 165.81 | 81.55 | 2.24 | 67 |
| 6 | 10/26/2025 | 15:18:21 | 70.06, -53.34 | 82.62 | 10/26/2025 | 15:19:09 | 70.05, -53.34 | 82.62 | 0.67 | 48 |
| 7 | 10/26/2025 | 16:09:03 | -69.97, 114.11 | 97.46 | 10/26/2025 | 16:08:39 | -69.94, 114.14 | 97.49 | 3.32 | 24 |
| 8 | 10/29/2025 | 06:44:49 | -70.77,-106.02 | 95.79 | 10/29/2025 | 06:45:57 | -70.68,-104.18 | 95.87 | 68.30 | 68 |
| 9 | 10/29/2025 | 07:35:21 | 70.01, 62.49 | 83.47 | 10/29/2025 | 07:35:34 | 70.02, 62.51 | 83.48 | 1.17 | 13 |
| 10 | 10/29/2025 | 08:26:03 | -69.92,-130.06 | 96.61 | 10/29/2025 | 08:25:04 | -69.91,-130.01 | 96.63 | 2.31 | 59 |
| 11 | 10/31/2025 | 23:01:37 | -70.05, 10.88 | 95.64 | 10/31/2025 | 23:02:33 | -70.06, 10.82 | 95.63 | 2.88 | 56 |
| 12 | 10/31/2025 | 23:52:22 | 69.97, 178.30 | 84.30 | 10/31/2025 | 23:52:00 | 69.95, 178.30 | 84.27 | 2.86 | 22 |
| 13 | 11/01/2025 | 00:42:50 | -69.14, -13.18 | 96.52 | 11/01/2025 | 00:41:42 | -69.18, -15.10 | 96.49 | 76.21 | 68 |
| 14 | 11/03/2025 | 14:28:09 | 70.79, -41.87 | 85.94 | 11/03/2025 | 14:29:17 | 70.71, -39.95 | 85.87 | 70.67 | 68 |
| 15 | 11/03/2025 | 15:18:38 | -70.02, 126.67 | 94.83 | 11/03/2025 | 15:18:58 | -70.01, 126.64 | 94.84 | 1.42 | 20 |
| 16 | 11/03/2025 | 16:09:22 | 69.89, -65.83 | 85.06 | 11/03/2025 | 16:08:25 | 69.89, -65.88 | 85.06 | 1.93 | 57 |
Figure of NOAA-20 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 10/20/2025
Download SNOs between NOAA-20 and LANDSAT-8 since TLE EPOCH: 10/20/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-8