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: 10/31/2025
| 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 | 10/31/2025 | 23:01:42 | 70.12,-169.13 | 84.44 | 10/31/2025 | 23:02:47 | 70.14,-169.11 | 84.46 | 2.43 | 65 |
| 2 | 10/31/2025 | 23:52:23 | -70.00, -1.64 | 95.67 | 10/31/2025 | 23:52:17 | -70.03, -1.63 | 95.65 | 2.68 | 6 |
| 3 | 11/01/2025 | 00:43:01 | 69.55, 166.35 | 83.89 | 11/01/2025 | 00:41:50 | 69.59, 165.41 | 83.93 | 36.75 | 71 |
| 4 | 11/03/2025 | 15:18:32 | 70.11, -53.33 | 85.27 | 11/03/2025 | 15:19:19 | 70.11, -53.28 | 85.27 | 1.75 | 47 |
| 5 | 11/03/2025 | 16:09:13 | -69.99, 114.17 | 94.84 | 11/03/2025 | 16:08:49 | -70.00, 114.20 | 94.83 | 1.85 | 24 |
| 6 | 11/06/2025 | 07:35:21 | 70.06, 62.55 | 86.03 | 11/06/2025 | 07:35:51 | 70.05, 62.51 | 86.03 | 1.42 | 30 |
| 7 | 11/06/2025 | 08:26:02 | -69.93,-129.94 | 94.08 | 11/06/2025 | 08:25:21 | -69.95,-130.00 | 94.07 | 2.72 | 41 |
| 8 | 11/08/2025 | 23:01:36 | -70.71, 10.00 | 92.54 | 11/08/2025 | 23:02:45 | -70.63, 11.58 | 92.63 | 59.00 | 69 |
| 9 | 11/08/2025 | 23:52:09 | 70.02, 178.41 | 86.77 | 11/08/2025 | 23:52:21 | 70.02, 178.35 | 86.78 | 2.43 | 12 |
| 10 | 11/09/2025 | 00:42:51 | -69.94, -14.16 | 93.30 | 11/09/2025 | 00:41:51 | -69.92, -14.16 | 93.32 | 1.86 | 60 |
| 11 | 11/11/2025 | 15:18:15 | -70.15, 126.69 | 92.36 | 11/11/2025 | 15:19:24 | -70.13, 126.74 | 92.38 | 2.48 | 69 |
| 12 | 11/11/2025 | 16:08:59 | 70.04, -65.83 | 87.54 | 11/11/2025 | 16:08:51 | 70.02, -65.78 | 87.52 | 2.78 | 8 |
| 13 | 11/11/2025 | 16:59:36 | -69.69, 102.01 | 92.80 | 11/11/2025 | 16:58:24 | -69.76, 101.48 | 92.74 | 21.73 | 72 |
| 14 | 11/14/2025 | 07:35:04 | -70.12,-117.46 | 91.68 | 11/14/2025 | 07:35:54 | -70.10,-117.43 | 91.70 | 2.42 | 50 |
| 15 | 11/14/2025 | 08:25:47 | 69.96, 50.09 | 88.18 | 11/14/2025 | 08:25:21 | 69.98, 50.05 | 88.20 | 2.82 | 26 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/31/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 10/31/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9