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: 11/4/2025
| 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 | 11/06/2025 | 07:35:21 | 70.06, 62.54 | 86.04 | 11/06/2025 | 07:35:51 | 70.05, 62.51 | 86.03 | 1.74 | 30 |
| 2 | 11/06/2025 | 08:26:02 | -69.94,-129.96 | 94.08 | 11/06/2025 | 08:25:21 | -69.94,-130.01 | 94.08 | 1.98 | 41 |
| 3 | 11/08/2025 | 23:01:37 | -70.72, 9.99 | 92.54 | 11/08/2025 | 23:02:46 | -70.63, 11.58 | 92.62 | 59.23 | 69 |
| 4 | 11/08/2025 | 23:52:10 | 70.02, 178.41 | 86.77 | 11/08/2025 | 23:52:22 | 70.03, 178.35 | 86.78 | 2.46 | 12 |
| 5 | 11/09/2025 | 00:42:52 | -69.94, -14.16 | 93.29 | 11/09/2025 | 00:41:52 | -69.92, -14.16 | 93.32 | 2.17 | 60 |
| 6 | 11/11/2025 | 15:18:15 | -70.15, 126.69 | 92.36 | 11/11/2025 | 15:19:24 | -70.14, 126.75 | 92.37 | 2.02 | 69 |
| 7 | 11/11/2025 | 16:08:59 | 70.03, -65.82 | 87.54 | 11/11/2025 | 16:08:51 | 70.03, -65.77 | 87.53 | 1.95 | 8 |
| 8 | 11/11/2025 | 16:59:37 | -69.74, 101.94 | 92.75 | 11/11/2025 | 16:58:24 | -69.77, 101.49 | 92.73 | 17.35 | 73 |
| 9 | 11/14/2025 | 07:35:04 | -70.11,-117.45 | 91.69 | 11/14/2025 | 07:35:54 | -70.13,-117.40 | 91.67 | 2.57 | 50 |
| 10 | 11/14/2025 | 08:25:48 | 70.00, 50.03 | 88.22 | 11/14/2025 | 08:25:21 | 70.01, 50.08 | 88.22 | 2.39 | 27 |
| 11 | 11/14/2025 | 09:16:13 | -69.01,-141.23 | 92.76 | 11/14/2025 | 09:15:06 | -69.09,-143.54 | 92.70 | 92.20 | 67 |
| 12 | 11/16/2025 | 23:51:53 | -70.08, -1.60 | 91.05 | 11/16/2025 | 23:52:24 | -70.08, -1.58 | 91.05 | 0.83 | 31 |
| 13 | 11/17/2025 | 00:42:37 | 69.98, 165.86 | 88.86 | 11/17/2025 | 00:41:51 | 69.96, 165.90 | 88.85 | 1.96 | 46 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/4/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/04/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9