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: 4/21/2025
| 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 | 70.15,-169.15 | 57.55 | 04/22/2025 | 23:02:16 | 70.13,-169.22 | 57.52 | 3.20 | 35 |
| 2 | 04/22/2025 | 23:52:24 | -70.08, -1.74 | 122.53 | 04/22/2025 | 23:51:45 | -70.07, -1.67 | 122.55 | 3.25 | 39 |
| 3 | 04/25/2025 | 14:27:56 | -70.76, 138.36 | 122.70 | 04/25/2025 | 14:29:06 | -70.64, 139.77 | 122.85 | 53.53 | 70 |
| 4 | 04/25/2025 | 15:18:30 | 70.15, -53.37 | 56.67 | 04/25/2025 | 15:18:40 | 70.15, -53.30 | 56.66 | 2.60 | 10 |
| 5 | 04/25/2025 | 16:09:12 | -70.03, 114.13 | 123.47 | 04/25/2025 | 16:08:10 | -70.04, 114.18 | 123.46 | 1.90 | 62 |
| 6 | 04/28/2025 | 06:44:35 | -70.19,-104.95 | 124.14 | 04/28/2025 | 06:45:39 | -70.19,-105.00 | 124.15 | 1.84 | 64 |
| 7 | 04/28/2025 | 07:35:18 | 70.06, 62.57 | 55.72 | 04/28/2025 | 07:35:06 | 70.08, 62.49 | 55.74 | 3.61 | 12 |
| 8 | 04/28/2025 | 08:25:53 | -69.57,-129.39 | 124.80 | 04/28/2025 | 08:24:42 | -69.64,-130.49 | 124.70 | 42.99 | 71 |
| 9 | 04/30/2025 | 23:01:24 | -70.16, 10.89 | 124.99 | 04/30/2025 | 23:02:03 | -70.19, 10.90 | 124.97 | 2.72 | 39 |
| 10 | 04/30/2025 | 23:52:08 | 70.08, 178.32 | 54.92 | 04/30/2025 | 23:51:30 | 70.07, 178.38 | 54.91 | 2.42 | 38 |
| 11 | 05/03/2025 | 14:27:41 | 70.79, -41.63 | 54.87 | 05/03/2025 | 14:28:50 | 70.64, -40.18 | 54.68 | 55.91 | 69 |
| 12 | 05/03/2025 | 15:18:13 | -70.15, 126.71 | 125.81 | 05/03/2025 | 15:18:27 | -70.15, 126.74 | 125.81 | 1.04 | 14 |
| 13 | 05/03/2025 | 16:08:56 | 70.01, -65.78 | 54.05 | 05/03/2025 | 16:07:54 | 70.03, -65.78 | 54.07 | 1.99 | 62 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/21/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/21/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9