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: 8/10/2025
| 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 | 08/12/2025 | 22:12:04 | -70.12, 23.26 | 124.58 | 08/12/2025 | 22:13:08 | -70.14, 23.26 | 124.57 | 2.35 | 64 |
| 2 | 08/12/2025 | 23:02:48 | 70.04,-169.30 | 55.35 | 08/12/2025 | 23:02:35 | 70.04,-169.24 | 55.35 | 2.23 | 13 |
| 3 | 08/12/2025 | 23:53:23 | -69.55, -1.26 | 125.16 | 08/12/2025 | 23:52:11 | -69.60, -2.22 | 125.06 | 37.90 | 72 |
| 4 | 08/15/2025 | 14:28:59 | -70.12, 139.04 | 123.76 | 08/15/2025 | 14:29:39 | -70.11, 139.10 | 123.77 | 2.21 | 40 |
| 5 | 08/15/2025 | 15:19:42 | 69.98, -53.45 | 56.12 | 08/15/2025 | 15:19:06 | 70.01, -53.41 | 56.14 | 3.16 | 36 |
| 6 | 08/18/2025 | 05:55:21 | 70.77, 86.46 | 57.77 | 08/18/2025 | 05:56:30 | 70.66, 88.15 | 57.60 | 63.39 | 69 |
| 7 | 08/18/2025 | 06:45:52 | -70.07,-105.11 | 122.96 | 08/18/2025 | 06:46:09 | -70.06,-105.10 | 122.97 | 0.68 | 17 |
| 8 | 08/18/2025 | 07:36:35 | 69.93, 62.40 | 56.92 | 08/18/2025 | 07:35:36 | 69.95, 62.40 | 56.94 | 2.27 | 59 |
| 9 | 08/20/2025 | 22:12:04 | 70.15,-156.78 | 57.99 | 08/20/2025 | 22:13:09 | 70.15,-156.72 | 57.98 | 2.22 | 65 |
| 10 | 08/20/2025 | 23:02:46 | -70.02, 10.73 | 122.14 | 08/20/2025 | 23:02:39 | -70.05, 10.76 | 122.11 | 3.15 | 7 |
| 11 | 08/20/2025 | 23:53:23 | 69.57, 178.71 | 57.41 | 08/20/2025 | 23:52:12 | 69.60, 177.79 | 57.48 | 35.61 | 71 |
| 12 | 08/23/2025 | 14:28:58 | 70.11, -40.95 | 58.85 | 08/23/2025 | 14:29:39 | 70.11, -40.90 | 58.84 | 1.98 | 41 |
| 13 | 08/23/2025 | 15:19:40 | -69.98, 126.56 | 121.28 | 08/23/2025 | 15:19:09 | -70.01, 126.59 | 121.25 | 3.34 | 31 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/10/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/10/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9