Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-8 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/11/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-8) | Time (LANDSAT-8) | Lat,Lon (LANDSAT-8) | SZA (LANDSAT-8 ) | Distance(km) | Time Diff (sec) |
| 1 | 10/11/2025 | 22:36:53 | 70.15,-162.99 | 77.44 | 10/11/2025 | 22:38:03 | 70.16,-162.92 | 77.44 | 2.70 | 70 |
| 2 | 10/11/2025 | 23:27:34 | -70.05, 4.50 | 102.66 | 10/11/2025 | 23:27:33 | -70.05, 4.55 | 102.66 | 2.10 | 1 |
| 3 | 10/12/2025 | 00:18:15 | 69.74, 172.26 | 77.05 | 10/12/2025 | 00:17:03 | 69.78, 171.82 | 77.09 | 17.64 | 72 |
| 4 | 10/14/2025 | 14:53:43 | 70.12, -47.16 | 78.41 | 10/14/2025 | 14:54:32 | 70.12, -47.11 | 78.40 | 1.96 | 49 |
| 5 | 10/14/2025 | 15:44:24 | -70.02, 120.33 | 101.70 | 10/14/2025 | 15:44:02 | -70.01, 120.37 | 101.71 | 1.85 | 22 |
| 6 | 10/14/2025 | 16:34:51 | 68.96, -70.85 | 77.27 | 10/14/2025 | 16:33:45 | 69.01, -73.32 | 77.32 | 98.79 | 66 |
| 7 | 10/17/2025 | 07:10:33 | 70.05, 68.75 | 79.32 | 10/17/2025 | 07:11:02 | 70.04, 68.67 | 79.31 | 3.05 | 29 |
| 8 | 10/17/2025 | 08:01:15 | -69.99,-123.85 | 100.73 | 10/17/2025 | 08:00:31 | -69.99,-123.77 | 100.74 | 2.89 | 44 |
| 9 | 10/19/2025 | 22:36:47 | -70.54, 16.45 | 99.23 | 10/19/2025 | 22:37:58 | -70.44, 17.48 | 99.34 | 39.91 | 71 |
| 10 | 10/19/2025 | 23:27:24 | 70.04,-175.45 | 80.27 | 10/19/2025 | 23:27:30 | 70.05,-175.43 | 80.29 | 1.71 | 6 |
| 11 | 10/20/2025 | 00:18:05 | -69.92, -7.96 | 99.83 | 10/20/2025 | 00:17:00 | -69.95, -7.94 | 99.81 | 2.67 | 65 |
| 12 | 10/22/2025 | 14:53:30 | -70.12, 132.92 | 98.71 | 10/22/2025 | 14:54:32 | -70.10, 132.87 | 98.73 | 2.63 | 62 |
| 13 | 10/22/2025 | 15:44:14 | 69.98, -59.57 | 81.17 | 10/22/2025 | 15:43:59 | 69.98, -59.64 | 81.17 | 2.70 | 15 |
| 14 | 10/22/2025 | 16:34:47 | -69.44, 108.54 | 99.36 | 10/22/2025 | 16:33:36 | -69.50, 107.32 | 99.31 | 48.12 | 71 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 10/11/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 10/11/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8