Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 11/2/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 11/03/2025 | 15:18:32 | 70.09, -53.30 | 85.26 | 11/03/2025 | 15:19:20 | 70.07, -53.33 | 85.23 | 2.51 | 48 |
| 2 | 11/03/2025 | 16:09:13 | -69.98, 114.19 | 94.85 | 11/03/2025 | 16:08:50 | -69.97, 114.15 | 94.87 | 2.13 | 23 |
| 3 | 11/06/2025 | 07:35:21 | 70.09, 62.49 | 86.07 | 11/06/2025 | 07:35:50 | 70.08, 62.55 | 86.05 | 2.60 | 29 |
| 4 | 11/06/2025 | 08:26:02 | -69.97,-130.00 | 94.05 | 11/06/2025 | 08:25:20 | -69.98,-129.96 | 94.05 | 1.46 | 42 |
| 5 | 11/08/2025 | 23:01:37 | -70.75, 9.95 | 92.51 | 11/08/2025 | 23:02:46 | -70.61, 11.55 | 92.64 | 60.99 | 69 |
| 6 | 11/08/2025 | 23:52:10 | 70.05, 178.36 | 86.81 | 11/08/2025 | 23:52:21 | 70.06, 178.40 | 86.82 | 2.08 | 11 |
| 7 | 11/09/2025 | 00:42:51 | -69.92, -14.13 | 93.32 | 11/09/2025 | 00:41:52 | -69.90, -14.19 | 93.34 | 2.90 | 59 |
| 8 | 11/11/2025 | 15:18:15 | -70.12, 126.73 | 92.38 | 11/11/2025 | 15:19:25 | -70.13, 126.73 | 92.38 | 0.77 | 70 |
| 9 | 11/11/2025 | 16:08:59 | 70.01, -65.79 | 87.51 | 11/11/2025 | 16:08:52 | 70.02, -65.79 | 87.52 | 0.83 | 7 |
| 10 | 11/11/2025 | 16:59:37 | -69.72, 101.97 | 92.77 | 11/11/2025 | 16:58:24 | -69.81, 101.55 | 92.69 | 19.16 | 73 |
| 11 | 11/14/2025 | 07:35:04 | -70.09,-117.42 | 91.71 | 11/14/2025 | 07:35:55 | -70.12,-117.41 | 91.68 | 3.66 | 51 |
| 12 | 11/14/2025 | 08:25:48 | 69.98, 50.06 | 88.20 | 11/14/2025 | 08:25:22 | 70.00, 50.07 | 88.22 | 2.68 | 26 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/2/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/02/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9