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: 7/10/2025
| 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 | 07/11/2025 | 22:12:00 | -70.16, 23.22 | 131.82 | 07/11/2025 | 22:12:48 | -70.14, 23.29 | 131.86 | 3.41 | 48 |
| 2 | 07/11/2025 | 23:02:44 | 70.04,-169.28 | 48.06 | 07/11/2025 | 23:02:15 | 70.03,-169.22 | 48.05 | 2.36 | 29 |
| 3 | 07/14/2025 | 13:38:27 | 70.98, -29.64 | 49.44 | 07/14/2025 | 13:39:34 | 70.88, -27.36 | 49.24 | 83.58 | 67 |
| 4 | 07/14/2025 | 14:28:54 | -70.10, 139.09 | 131.49 | 07/14/2025 | 14:29:16 | -70.11, 139.14 | 131.48 | 2.51 | 22 |
| 5 | 07/14/2025 | 15:19:38 | 69.98, -53.43 | 48.39 | 07/14/2025 | 15:18:43 | 70.00, -53.37 | 48.42 | 3.27 | 55 |
| 6 | 07/17/2025 | 05:55:07 | 70.13, 87.48 | 48.98 | 07/17/2025 | 05:56:16 | 70.12, 87.40 | 48.96 | 3.14 | 69 |
| 7 | 07/17/2025 | 06:45:49 | -70.03,-105.05 | 131.12 | 07/17/2025 | 06:45:46 | -70.02,-105.11 | 131.13 | 2.87 | 3 |
| 8 | 07/17/2025 | 07:36:28 | 69.66, 62.82 | 48.50 | 07/17/2025 | 07:35:16 | 69.74, 62.15 | 48.61 | 27.28 | 72 |
| 9 | 07/19/2025 | 22:12:03 | 70.13,-156.75 | 49.47 | 07/19/2025 | 22:12:44 | 70.12,-156.71 | 49.45 | 2.27 | 41 |
| 10 | 07/19/2025 | 23:02:45 | -70.03, 10.72 | 130.64 | 07/19/2025 | 23:02:14 | -70.02, 10.78 | 130.65 | 2.39 | 31 |
| 11 | 07/22/2025 | 13:38:27 | -70.86, 150.55 | 129.25 | 07/22/2025 | 13:39:35 | -70.77, 152.50 | 129.42 | 72.10 | 68 |
| 12 | 07/22/2025 | 14:28:58 | 70.08, -40.91 | 49.94 | 07/22/2025 | 14:29:13 | 70.05, -40.91 | 49.90 | 3.52 | 15 |
| 13 | 07/22/2025 | 15:19:40 | -69.97, 126.58 | 130.18 | 07/22/2025 | 15:18:43 | -69.95, 126.58 | 130.19 | 1.88 | 57 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/10/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/10/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9