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: 11/1/2025
| 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 | 70.11, -53.33 | 85.27 | 11/03/2025 | 15:19:19 | 70.11, -53.28 | 85.27 | 1.87 | 47 |
| 2 | 11/03/2025 | 16:09:13 | -69.99, 114.17 | 94.84 | 11/03/2025 | 16:08:49 | -70.01, 114.21 | 94.83 | 1.92 | 24 |
| 3 | 11/06/2025 | 07:35:21 | 70.06, 62.55 | 86.03 | 11/06/2025 | 07:35:51 | 70.06, 62.52 | 86.03 | 1.14 | 30 |
| 4 | 11/06/2025 | 08:26:02 | -69.93,-129.94 | 94.08 | 11/06/2025 | 08:25:21 | -69.95,-129.99 | 94.07 | 2.95 | 41 |
| 5 | 11/08/2025 | 23:01:36 | -70.71, 10.00 | 92.54 | 11/08/2025 | 23:02:45 | -70.63, 11.59 | 92.62 | 59.09 | 69 |
| 6 | 11/08/2025 | 23:52:09 | 70.01, 178.41 | 86.77 | 11/08/2025 | 23:52:21 | 70.03, 178.36 | 86.79 | 2.80 | 12 |
| 7 | 11/09/2025 | 00:42:51 | -69.94, -14.15 | 93.30 | 11/09/2025 | 00:41:51 | -69.93, -14.15 | 93.31 | 0.80 | 60 |
| 8 | 11/11/2025 | 15:18:15 | -70.15, 126.70 | 92.36 | 11/11/2025 | 15:19:24 | -70.15, 126.75 | 92.37 | 2.01 | 69 |
| 9 | 11/11/2025 | 16:08:59 | 70.03, -65.82 | 87.54 | 11/11/2025 | 16:08:51 | 70.03, -65.77 | 87.53 | 2.02 | 8 |
| 10 | 11/11/2025 | 16:59:37 | -69.74, 101.94 | 92.75 | 11/11/2025 | 16:58:24 | -69.77, 101.50 | 92.73 | 17.37 | 73 |
| 11 | 11/14/2025 | 07:35:04 | -70.11,-117.46 | 91.68 | 11/14/2025 | 07:35:54 | -70.12,-117.41 | 91.68 | 1.87 | 50 |
| 12 | 11/14/2025 | 08:25:48 | 70.01, 50.02 | 88.22 | 11/14/2025 | 08:25:21 | 70.00, 50.07 | 88.21 | 2.19 | 27 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/1/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/01/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9