Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-20 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/15/2025
| Index | Date (NOAA-20) | Time (NOAA-20) | Lat,Lon (NOAA-20) | SZA (NOAA-20 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 09/17/2025 | 23:26:48 | -70.02, 4.54 | 111.94 | 09/17/2025 | 23:27:30 | -70.00, 4.52 | 111.95 | 1.65 | 42 |
| 2 | 09/18/2025 | 00:17:32 | 69.92, 172.00 | 67.98 | 09/18/2025 | 00:16:57 | 69.90, 172.02 | 67.96 | 1.94 | 35 |
| 3 | 09/20/2025 | 14:53:10 | 70.74, -48.14 | 69.84 | 09/20/2025 | 14:54:18 | 70.63, -46.31 | 69.69 | 68.30 | 68 |
| 4 | 09/20/2025 | 15:43:39 | -69.95, 120.43 | 110.97 | 09/20/2025 | 15:43:58 | -69.97, 120.36 | 110.95 | 3.46 | 19 |
| 5 | 09/20/2025 | 16:34:23 | 69.86, -72.12 | 68.95 | 09/20/2025 | 16:33:25 | 69.87, -72.14 | 68.96 | 1.39 | 58 |
| 6 | 09/23/2025 | 07:09:50 | 70.05, 68.74 | 70.17 | 09/23/2025 | 07:10:56 | 70.08, 68.77 | 70.19 | 3.33 | 66 |
| 7 | 09/23/2025 | 08:00:32 | -69.94,-123.78 | 109.94 | 09/23/2025 | 08:00:27 | -69.92,-123.83 | 109.96 | 3.29 | 5 |
| 8 | 09/23/2025 | 08:51:10 | 69.53, 44.14 | 69.66 | 09/23/2025 | 08:49:58 | 69.59, 43.36 | 69.73 | 30.82 | 72 |
| 9 | 09/25/2025 | 23:26:42 | 70.00,-175.40 | 71.15 | 09/25/2025 | 23:27:25 | 70.01,-175.45 | 71.16 | 1.99 | 43 |
| 10 | 09/26/2025 | 00:17:24 | -69.89, -7.91 | 108.95 | 09/26/2025 | 00:16:55 | -69.90, -7.96 | 108.94 | 2.65 | 29 |
| 11 | 09/28/2025 | 14:53:06 | -70.88, 131.68 | 106.93 | 09/28/2025 | 14:54:13 | -70.80, 133.96 | 107.04 | 83.60 | 67 |
| 12 | 09/28/2025 | 15:43:34 | 69.95, -59.54 | 72.14 | 09/28/2025 | 15:43:53 | 69.97, -59.61 | 72.16 | 3.25 | 19 |
| 13 | 09/28/2025 | 16:34:17 | -69.89, 107.87 | 107.91 | 09/28/2025 | 16:33:23 | -69.87, 107.88 | 107.93 | 2.39 | 54 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/15/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 09/15/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9