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: 8/30/2025
| 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 | 08/31/2025 | 14:28:55 | -70.11, 139.06 | 118.36 | 08/31/2025 | 14:29:42 | -70.12, 139.11 | 118.36 | 2.01 | 47 |
| 2 | 08/31/2025 | 15:19:38 | 69.96, -53.41 | 61.51 | 08/31/2025 | 15:19:10 | 69.97, -53.47 | 61.51 | 2.31 | 28 |
| 3 | 09/03/2025 | 06:45:49 | -70.10,-105.15 | 117.40 | 09/03/2025 | 06:46:14 | -70.08,-105.08 | 117.43 | 3.42 | 25 |
| 4 | 09/03/2025 | 07:36:32 | 69.95, 62.39 | 62.46 | 09/03/2025 | 07:35:41 | 69.98, 62.42 | 62.49 | 3.22 | 51 |
| 5 | 09/05/2025 | 22:12:03 | 70.31,-157.01 | 63.79 | 09/05/2025 | 22:13:14 | 70.22,-156.63 | 63.69 | 17.13 | 71 |
| 6 | 09/05/2025 | 23:02:42 | -70.04, 10.72 | 116.47 | 09/05/2025 | 23:02:45 | -70.06, 10.77 | 116.46 | 2.64 | 3 |
| 7 | 09/05/2025 | 23:53:25 | 69.89, 178.25 | 63.39 | 09/05/2025 | 23:52:13 | 69.90, 178.19 | 63.40 | 2.59 | 72 |
| 8 | 09/08/2025 | 14:28:53 | 70.10, -40.91 | 64.58 | 09/08/2025 | 14:29:46 | 70.11, -40.91 | 64.58 | 1.27 | 53 |
| 9 | 09/08/2025 | 15:19:35 | -69.99, 126.57 | 115.52 | 09/08/2025 | 15:19:16 | -70.00, 126.57 | 115.51 | 1.29 | 19 |
| 10 | 09/08/2025 | 16:10:04 | 69.10, -64.83 | 63.58 | 09/08/2025 | 16:08:57 | 69.12, -66.98 | 63.65 | 85.33 | 67 |
| 11 | 09/11/2025 | 06:45:45 | 70.06, 74.92 | 65.55 | 09/11/2025 | 06:46:15 | 70.08, 74.93 | 65.56 | 2.07 | 30 |
| 12 | 09/11/2025 | 07:36:27 | -69.95,-117.60 | 114.55 | 09/11/2025 | 07:35:45 | -69.97,-117.59 | 114.53 | 2.20 | 42 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/30/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/30/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9