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: 4/23/2025
| 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 | 04/25/2025 | 14:27:57 | -70.77, 138.34 | 122.69 | 04/25/2025 | 14:29:06 | -70.68, 139.84 | 122.81 | 55.71 | 69 |
| 2 | 04/25/2025 | 15:18:31 | 70.16, -53.38 | 56.68 | 04/25/2025 | 15:18:41 | 70.14, -53.31 | 56.66 | 3.19 | 10 |
| 3 | 04/25/2025 | 16:09:13 | -70.04, 114.11 | 123.46 | 04/25/2025 | 16:08:11 | -70.03, 114.16 | 123.47 | 2.68 | 62 |
| 4 | 04/28/2025 | 06:44:35 | -70.20,-104.97 | 124.13 | 04/28/2025 | 06:45:39 | -70.18,-105.01 | 124.15 | 2.90 | 64 |
| 5 | 04/28/2025 | 07:35:18 | 70.07, 62.55 | 55.73 | 04/28/2025 | 07:35:06 | 70.07, 62.48 | 55.73 | 2.70 | 12 |
| 6 | 04/28/2025 | 08:25:53 | -69.58,-129.41 | 124.79 | 04/28/2025 | 08:24:42 | -69.63,-130.50 | 124.71 | 42.45 | 71 |
| 7 | 04/30/2025 | 23:01:24 | -70.18, 10.87 | 124.98 | 04/30/2025 | 23:02:03 | -70.19, 10.89 | 124.98 | 1.41 | 39 |
| 8 | 04/30/2025 | 23:52:08 | 70.09, 178.31 | 54.93 | 04/30/2025 | 23:51:30 | 70.07, 178.38 | 54.91 | 3.47 | 38 |
| 9 | 05/03/2025 | 14:27:41 | 70.80, -41.65 | 54.88 | 05/03/2025 | 14:28:50 | 70.64, -40.17 | 54.69 | 56.94 | 69 |
| 10 | 05/03/2025 | 15:18:13 | -70.16, 126.69 | 125.79 | 05/03/2025 | 15:18:27 | -70.15, 126.74 | 125.81 | 2.14 | 14 |
| 11 | 05/03/2025 | 16:08:56 | 70.02, -65.79 | 54.06 | 05/03/2025 | 16:07:54 | 70.04, -65.78 | 54.08 | 1.58 | 62 |
| 12 | 05/06/2025 | 06:44:19 | 70.21, 75.08 | 53.51 | 05/06/2025 | 06:45:21 | 70.19, 75.06 | 53.48 | 3.39 | 62 |
| 13 | 05/06/2025 | 07:35:01 | -70.10,-117.43 | 126.62 | 05/06/2025 | 07:34:51 | -70.08,-117.46 | 126.64 | 2.95 | 10 |
| 14 | 05/06/2025 | 08:25:35 | 69.49, 50.80 | 52.74 | 05/06/2025 | 08:24:25 | 69.57, 49.49 | 52.86 | 51.82 | 70 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/23/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/23/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9