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: 7/2/2025
| 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 | 07/03/2025 | 22:11:57 | 70.10,-156.68 | 47.21 | 07/03/2025 | 22:12:47 | 70.11,-156.76 | 47.21 | 3.09 | 50 |
| 2 | 07/03/2025 | 23:02:39 | -70.03, 10.74 | 132.87 | 07/03/2025 | 23:02:16 | -70.06, 10.79 | 132.84 | 3.32 | 23 |
| 3 | 07/06/2025 | 14:28:53 | 70.09, -40.90 | 47.45 | 07/06/2025 | 14:29:17 | 70.08, -40.93 | 47.43 | 2.25 | 24 |
| 4 | 07/06/2025 | 15:19:34 | -69.96, 126.62 | 132.68 | 07/06/2025 | 15:18:47 | -69.97, 126.55 | 132.67 | 2.83 | 47 |
| 5 | 07/09/2025 | 05:55:07 | -70.31, -92.78 | 132.02 | 07/09/2025 | 05:56:18 | -70.24, -92.45 | 132.11 | 14.17 | 71 |
| 6 | 07/09/2025 | 06:45:48 | 70.08, 74.88 | 47.75 | 07/09/2025 | 06:45:45 | 70.08, 74.95 | 47.74 | 2.79 | 3 |
| 7 | 07/09/2025 | 07:36:29 | -69.94,-117.59 | 132.39 | 07/09/2025 | 07:35:15 | -69.97,-117.56 | 132.36 | 3.32 | 74 |
| 8 | 07/11/2025 | 22:11:59 | -70.14, 23.25 | 131.84 | 07/11/2025 | 22:12:48 | -70.12, 23.26 | 131.87 | 1.77 | 49 |
| 9 | 07/11/2025 | 23:02:43 | 70.02,-169.26 | 48.04 | 07/11/2025 | 23:02:15 | 70.01,-169.26 | 48.03 | 1.86 | 28 |
| 10 | 07/14/2025 | 13:38:28 | 71.02, -29.71 | 49.49 | 07/14/2025 | 13:39:34 | 70.91, -27.31 | 49.27 | 87.98 | 66 |
| 11 | 07/14/2025 | 14:28:54 | -70.08, 139.11 | 131.51 | 07/14/2025 | 14:29:17 | -70.10, 139.11 | 131.50 | 2.33 | 23 |
| 12 | 07/14/2025 | 15:19:38 | 69.97, -53.41 | 48.39 | 07/14/2025 | 15:18:44 | 69.98, -53.41 | 48.40 | 1.12 | 54 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/2/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/02/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9