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: 9/23/2025
| 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 | 23:26:42 | 70.02,-175.43 | 71.17 | 09/25/2025 | 23:27:32 | 70.00,-175.49 | 71.15 | 3.53 | 50 |
| 2 | 09/26/2025 | 00:17:24 | -69.92, -7.96 | 108.92 | 09/26/2025 | 00:17:01 | -69.94, -7.94 | 108.90 | 2.75 | 23 |
| 3 | 09/26/2025 | 01:07:50 | 68.86, 160.87 | 70.03 | 09/26/2025 | 01:06:44 | 68.95, 158.38 | 70.14 | 99.96 | 66 |
| 4 | 09/28/2025 | 15:43:34 | 69.99, -59.59 | 72.18 | 09/28/2025 | 15:44:01 | 70.01, -59.59 | 72.20 | 2.56 | 27 |
| 5 | 09/28/2025 | 16:34:16 | -69.88, 107.88 | 107.92 | 09/28/2025 | 16:33:31 | -69.90, 107.89 | 107.90 | 2.33 | 45 |
| 6 | 10/01/2025 | 07:09:48 | -70.38,-111.71 | 106.41 | 10/01/2025 | 07:11:00 | -70.26,-111.00 | 106.53 | 29.62 | 72 |
| 7 | 10/01/2025 | 08:00:26 | 69.97, 56.23 | 73.20 | 10/01/2025 | 08:00:30 | 69.99, 56.26 | 73.22 | 2.65 | 4 |
| 8 | 10/01/2025 | 08:51:08 | -69.86,-136.29 | 106.91 | 10/01/2025 | 08:50:00 | -69.88,-136.26 | 106.88 | 2.96 | 68 |
| 9 | 10/03/2025 | 23:26:33 | -70.05, 4.59 | 105.71 | 10/03/2025 | 23:27:31 | -70.04, 4.57 | 105.72 | 0.84 | 58 |
| 10 | 10/04/2025 | 00:17:17 | 69.96, 172.03 | 74.22 | 10/04/2025 | 00:16:58 | 69.93, 172.06 | 74.19 | 3.26 | 19 |
| 11 | 10/04/2025 | 01:07:47 | -69.21, -19.56 | 106.52 | 10/04/2025 | 01:06:38 | -69.27, -21.20 | 106.45 | 64.84 | 69 |
| 12 | 10/06/2025 | 15:43:24 | -69.99, 120.46 | 104.74 | 10/06/2025 | 15:43:59 | -70.00, 120.40 | 104.73 | 2.33 | 35 |
| 13 | 10/06/2025 | 16:34:08 | 69.90, -72.09 | 75.19 | 10/06/2025 | 16:33:26 | 69.88, -72.11 | 75.17 | 2.11 | 42 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/23/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 09/23/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9