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: 9/25/2025
| 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 | 09/25/2025 | 23:26:43 | 70.05,-175.47 | 71.20 | 09/25/2025 | 23:27:32 | 70.03,-175.45 | 71.18 | 1.64 | 49 |
| 2 | 09/26/2025 | 00:17:25 | -69.94, -7.99 | 108.90 | 09/26/2025 | 00:17:02 | -69.92, -7.98 | 108.93 | 2.97 | 23 |
| 3 | 09/26/2025 | 01:07:51 | 68.88, 160.84 | 70.05 | 09/26/2025 | 01:06:45 | 68.93, 158.35 | 70.12 | 99.60 | 66 |
| 4 | 09/28/2025 | 15:43:34 | 70.01, -59.63 | 72.20 | 09/28/2025 | 15:44:01 | 69.98, -59.64 | 72.17 | 3.10 | 27 |
| 5 | 09/28/2025 | 16:34:16 | -69.91, 107.85 | 107.90 | 09/28/2025 | 16:33:30 | -69.93, 107.92 | 107.88 | 3.44 | 46 |
| 6 | 10/01/2025 | 07:09:48 | -70.40,-111.75 | 106.39 | 10/01/2025 | 07:10:59 | -70.27,-110.98 | 106.52 | 31.79 | 71 |
| 7 | 10/01/2025 | 08:00:25 | 69.93, 56.28 | 73.16 | 10/01/2025 | 08:00:30 | 69.95, 56.20 | 73.17 | 3.40 | 5 |
| 8 | 10/01/2025 | 08:51:07 | -69.83,-136.25 | 106.94 | 10/01/2025 | 08:50:00 | -69.84,-136.32 | 106.93 | 3.12 | 67 |
| 9 | 10/03/2025 | 23:26:34 | -70.07, 4.56 | 105.69 | 10/03/2025 | 23:27:31 | -70.04, 4.56 | 105.72 | 3.45 | 57 |
| 10 | 10/04/2025 | 00:17:17 | 69.92, 172.09 | 74.18 | 10/04/2025 | 00:16:58 | 69.92, 172.05 | 74.18 | 1.39 | 19 |
| 11 | 10/04/2025 | 01:07:47 | -69.18, -19.51 | 106.56 | 10/04/2025 | 01:06:38 | -69.27, -21.20 | 106.46 | 67.41 | 69 |
| 12 | 10/06/2025 | 15:43:25 | -70.01, 120.43 | 104.72 | 10/06/2025 | 15:43:58 | -70.03, 120.45 | 104.70 | 2.16 | 33 |
| 13 | 10/06/2025 | 16:34:09 | 69.92, -72.12 | 75.21 | 10/06/2025 | 16:33:25 | 69.91, -72.07 | 75.20 | 1.81 | 44 |
| 14 | 10/09/2025 | 07:09:39 | 70.39, 68.32 | 76.68 | 10/09/2025 | 07:10:50 | 70.30, 69.10 | 76.58 | 30.71 | 71 |
| 15 | 10/09/2025 | 08:00:15 | -69.96,-123.70 | 103.75 | 10/09/2025 | 08:00:24 | -69.98,-123.73 | 103.73 | 2.03 | 9 |
| 16 | 10/09/2025 | 08:50:59 | 69.87, 43.74 | 76.18 | 10/09/2025 | 08:49:51 | 69.86, 43.75 | 76.17 | 1.29 | 68 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/25/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 09/25/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9