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 | 22:12:04 | -70.15, 23.22 | 124.55 | 08/12/2025 | 22:13:08 | -70.11, 23.22 | 124.59 | 3.57 | 64 |
| 2 | 08/12/2025 | 23:02:47 | 70.01,-169.26 | 55.32 | 08/12/2025 | 23:02:35 | 70.02,-169.28 | 55.33 | 1.15 | 12 |
| 3 | 08/12/2025 | 23:53:22 | -69.52, -1.22 | 125.19 | 08/12/2025 | 23:52:11 | -69.57, -2.26 | 125.09 | 40.83 | 71 |
| 4 | 08/15/2025 | 14:28:58 | -70.09, 139.08 | 123.79 | 08/15/2025 | 14:29:39 | -70.09, 139.06 | 123.79 | 0.83 | 41 |
| 5 | 08/15/2025 | 15:19:42 | 70.01, -53.48 | 56.14 | 08/15/2025 | 15:19:06 | 69.98, -53.44 | 56.12 | 2.86 | 36 |
| 6 | 08/18/2025 | 05:55:22 | 70.79, 86.42 | 57.80 | 08/18/2025 | 05:56:30 | 70.70, 88.20 | 57.63 | 66.18 | 68 |
| 7 | 08/18/2025 | 06:45:52 | -70.04,-105.07 | 122.99 | 08/18/2025 | 06:46:10 | -70.04,-105.13 | 122.99 | 2.38 | 18 |
| 8 | 08/18/2025 | 07:36:36 | 69.96, 62.37 | 56.94 | 08/18/2025 | 07:35:37 | 69.93, 62.37 | 56.92 | 2.53 | 59 |
| 9 | 08/20/2025 | 22:12:04 | 70.11,-156.73 | 57.96 | 08/20/2025 | 22:13:10 | 70.13,-156.75 | 57.96 | 1.95 | 66 |
| 10 | 08/20/2025 | 23:02:47 | -70.04, 10.70 | 122.11 | 08/20/2025 | 23:02:40 | -70.03, 10.73 | 122.13 | 2.09 | 7 |
| 11 | 08/20/2025 | 23:53:24 | 69.59, 178.68 | 57.43 | 08/20/2025 | 23:52:12 | 69.64, 177.84 | 57.52 | 32.84 | 72 |
| 12 | 08/23/2025 | 14:28:57 | 70.07, -40.89 | 58.81 | 08/23/2025 | 14:29:39 | 70.09, -40.92 | 58.83 | 2.64 | 42 |
| 13 | 08/23/2025 | 15:19:40 | -70.00, 126.54 | 121.26 | 08/23/2025 | 15:19:09 | -69.99, 126.57 | 121.27 | 1.30 | 31 |
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