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: 8/12/2025
| 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 | 08/12/2025 | 22:12:05 | -70.16, 23.21 | 124.54 | 08/12/2025 | 22:13:08 | -70.16, 23.28 | 124.55 | 2.92 | 63 |
| 2 | 08/12/2025 | 23:02:48 | 70.02,-169.27 | 55.33 | 08/12/2025 | 23:02:36 | 70.00,-169.29 | 55.32 | 1.57 | 12 |
| 3 | 08/12/2025 | 23:53:23 | -69.53, -1.23 | 125.17 | 08/12/2025 | 23:52:12 | -69.56, -2.27 | 125.10 | 40.56 | 71 |
| 4 | 08/15/2025 | 14:28:58 | -70.10, 139.06 | 123.77 | 08/15/2025 | 14:29:39 | -70.08, 139.05 | 123.80 | 2.57 | 41 |
| 5 | 08/15/2025 | 15:19:41 | 69.96, -53.42 | 56.10 | 08/15/2025 | 15:19:06 | 69.98, -53.45 | 56.11 | 1.93 | 35 |
| 6 | 08/18/2025 | 05:55:22 | 70.80, 86.40 | 57.81 | 08/18/2025 | 05:56:30 | 70.69, 88.19 | 57.63 | 66.90 | 68 |
| 7 | 08/18/2025 | 06:45:52 | -70.05,-105.09 | 122.98 | 08/18/2025 | 06:46:10 | -70.03,-105.14 | 123.00 | 2.71 | 18 |
| 8 | 08/18/2025 | 07:36:35 | 69.92, 62.43 | 56.90 | 08/18/2025 | 07:35:37 | 69.93, 62.36 | 56.92 | 2.98 | 58 |
| 9 | 08/20/2025 | 22:12:04 | 70.13,-156.75 | 57.97 | 08/20/2025 | 22:13:10 | 70.13,-156.76 | 57.96 | 0.24 | 66 |
| 10 | 08/20/2025 | 23:02:46 | -70.00, 10.75 | 122.15 | 08/20/2025 | 23:02:40 | -70.02, 10.73 | 122.13 | 2.33 | 6 |
| 11 | 08/20/2025 | 23:53:23 | 69.55, 178.73 | 57.40 | 08/20/2025 | 23:52:12 | 69.64, 177.84 | 57.51 | 35.97 | 71 |
| 12 | 08/23/2025 | 14:28:58 | 70.09, -40.92 | 58.83 | 08/23/2025 | 14:29:40 | 70.10, -40.92 | 58.83 | 0.51 | 42 |
| 13 | 08/23/2025 | 15:19:40 | -69.96, 126.59 | 121.30 | 08/23/2025 | 15:19:10 | -69.99, 126.57 | 121.27 | 3.30 | 30 |
| 14 | 08/26/2025 | 05:55:22 | -70.92, -93.78 | 119.40 | 08/26/2025 | 05:56:30 | -70.81, -91.62 | 119.58 | 79.82 | 68 |
| 15 | 08/26/2025 | 06:45:51 | 70.06, 74.90 | 59.71 | 08/26/2025 | 06:46:09 | 70.04, 74.89 | 59.70 | 1.54 | 18 |
| 16 | 08/26/2025 | 07:36:33 | -69.93,-117.59 | 120.41 | 08/26/2025 | 07:35:39 | -69.94,-117.62 | 120.40 | 1.90 | 54 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/12/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/12/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9