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: 4/22/2025
| 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 | 04/22/2025 | 23:01:41 | 70.16,-169.17 | 57.56 | 04/22/2025 | 23:02:15 | 70.17,-169.16 | 57.57 | 1.55 | 34 |
| 2 | 04/22/2025 | 23:52:23 | -70.04, -1.68 | 122.58 | 04/22/2025 | 23:51:45 | -70.05, -1.69 | 122.56 | 1.24 | 38 |
| 3 | 04/25/2025 | 14:27:57 | -70.77, 138.34 | 122.68 | 04/25/2025 | 14:29:06 | -70.68, 139.83 | 122.81 | 55.70 | 69 |
| 4 | 04/25/2025 | 15:18:30 | 70.11, -53.30 | 56.63 | 04/25/2025 | 15:18:41 | 70.14, -53.32 | 56.65 | 3.12 | 11 |
| 5 | 04/25/2025 | 16:09:13 | -70.05, 114.11 | 123.46 | 04/25/2025 | 16:08:11 | -70.02, 114.15 | 123.48 | 3.22 | 62 |
| 6 | 04/28/2025 | 06:44:35 | -70.21,-104.97 | 124.12 | 04/28/2025 | 06:45:38 | -70.23,-104.94 | 124.11 | 2.46 | 63 |
| 7 | 04/28/2025 | 07:35:19 | 70.12, 62.47 | 55.79 | 04/28/2025 | 07:35:05 | 70.12, 62.55 | 55.78 | 3.10 | 14 |
| 8 | 04/28/2025 | 08:25:53 | -69.59,-129.41 | 124.78 | 04/28/2025 | 08:24:42 | -69.62,-130.51 | 124.72 | 42.71 | 71 |
| 9 | 04/30/2025 | 23:01:24 | -70.18, 10.87 | 124.98 | 04/30/2025 | 23:02:03 | -70.17, 10.87 | 124.99 | 1.13 | 39 |
| 10 | 04/30/2025 | 23:52:07 | 70.04, 178.38 | 54.88 | 04/30/2025 | 23:51:30 | 70.06, 178.35 | 54.89 | 1.67 | 37 |
| 11 | 05/03/2025 | 14:27:40 | 70.75, -41.57 | 54.83 | 05/03/2025 | 14:28:49 | 70.67, -40.13 | 54.72 | 53.63 | 69 |
| 12 | 05/03/2025 | 15:18:12 | -70.11, 126.77 | 125.85 | 05/03/2025 | 15:18:27 | -70.12, 126.70 | 125.83 | 2.86 | 15 |
| 13 | 05/03/2025 | 16:08:56 | 70.03, -65.80 | 54.06 | 05/03/2025 | 16:07:54 | 70.01, -65.81 | 54.05 | 2.20 | 62 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/22/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/22/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9