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: 10/18/2025
| 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 | 10/19/2025 | 22:36:47 | -70.54, 16.46 | 99.24 | 10/19/2025 | 22:37:58 | -70.41, 17.44 | 99.37 | 39.39 | 71 |
| 2 | 10/19/2025 | 23:27:24 | 70.03,-175.43 | 80.26 | 10/19/2025 | 23:27:30 | 70.03,-175.46 | 80.27 | 1.19 | 6 |
| 3 | 10/20/2025 | 00:18:05 | -69.92, -7.95 | 99.83 | 10/20/2025 | 00:17:00 | -69.92, -7.99 | 99.84 | 1.33 | 65 |
| 4 | 10/22/2025 | 14:53:29 | -70.12, 132.91 | 98.71 | 10/22/2025 | 14:54:29 | -70.15, 132.95 | 98.68 | 3.18 | 60 |
| 5 | 10/22/2025 | 15:44:13 | 69.98, -59.57 | 81.16 | 10/22/2025 | 15:43:57 | 69.99, -59.64 | 81.17 | 2.86 | 16 |
| 6 | 10/22/2025 | 16:34:45 | -69.39, 108.61 | 99.41 | 10/22/2025 | 16:33:35 | -69.43, 107.24 | 99.38 | 53.90 | 70 |
| 7 | 10/25/2025 | 07:10:19 | -70.08,-111.23 | 97.82 | 10/25/2025 | 07:10:57 | -70.07,-111.28 | 97.83 | 2.02 | 38 |
| 8 | 10/25/2025 | 08:01:03 | 69.94, 56.29 | 82.06 | 10/25/2025 | 08:00:24 | 69.96, 56.21 | 82.07 | 3.42 | 39 |
| 9 | 10/27/2025 | 22:36:37 | 70.64,-163.64 | 83.64 | 10/27/2025 | 22:37:46 | 70.55,-162.31 | 83.56 | 49.98 | 69 |
| 10 | 10/27/2025 | 23:27:09 | -70.04, 4.61 | 96.95 | 10/27/2025 | 23:27:23 | -70.06, 4.61 | 96.93 | 1.79 | 14 |
| 11 | 10/28/2025 | 00:17:54 | 69.96, 172.04 | 82.99 | 10/28/2025 | 00:16:50 | 69.95, 172.09 | 82.97 | 2.64 | 64 |
| 12 | 10/30/2025 | 14:53:18 | 70.14, -47.07 | 84.03 | 10/30/2025 | 14:54:19 | 70.12, -47.04 | 84.01 | 2.62 | 61 |
| 13 | 10/30/2025 | 15:43:59 | -70.02, 120.44 | 96.09 | 10/30/2025 | 15:43:49 | -70.02, 120.44 | 96.09 | 0.43 | 10 |
| 14 | 10/30/2025 | 16:34:34 | 69.41, -71.35 | 83.32 | 10/30/2025 | 16:33:24 | 69.46, -72.68 | 83.36 | 51.99 | 70 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 10/18/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 10/18/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8