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: 11/30/2025
| 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 | 12/01/2025 | 14:54:12 | -70.04, 132.81 | 88.17 | 12/01/2025 | 14:54:41 | -70.04, 132.78 | 88.17 | 1.26 | 29 |
| 2 | 12/01/2025 | 15:44:57 | 69.95, -59.75 | 91.75 | 12/01/2025 | 15:44:08 | 69.94, -59.72 | 91.74 | 2.20 | 49 |
| 3 | 12/04/2025 | 06:20:29 | 70.13, 81.11 | 92.31 | 12/04/2025 | 06:21:39 | 70.15, 81.19 | 92.32 | 3.52 | 70 |
| 4 | 12/04/2025 | 07:11:10 | -70.00,-111.37 | 87.83 | 12/04/2025 | 07:11:10 | -69.99,-111.42 | 87.85 | 2.67 | 0 |
| 5 | 12/04/2025 | 08:01:51 | 69.71, 56.38 | 91.89 | 12/04/2025 | 08:00:39 | 69.77, 55.93 | 91.95 | 18.50 | 72 |
| 6 | 12/06/2025 | 22:37:27 | 70.06,-163.01 | 92.56 | 12/06/2025 | 22:38:09 | 70.07,-163.05 | 92.57 | 2.26 | 42 |
| 7 | 12/06/2025 | 23:28:09 | -69.97, 4.44 | 87.53 | 12/06/2025 | 23:27:39 | -69.96, 4.43 | 87.54 | 1.30 | 30 |
| 8 | 12/09/2025 | 14:03:53 | -70.74, 144.37 | 86.48 | 12/09/2025 | 14:05:02 | -70.62, 145.99 | 86.62 | 61.18 | 69 |
| 9 | 12/09/2025 | 14:54:26 | 70.04, -47.22 | 92.82 | 12/09/2025 | 14:54:38 | 70.02, -47.24 | 92.79 | 2.24 | 12 |
| 10 | 12/09/2025 | 15:45:07 | -69.90, 120.31 | 87.33 | 12/09/2025 | 15:44:08 | -69.91, 120.25 | 87.31 | 3.16 | 59 |
| 11 | 12/12/2025 | 06:20:40 | -70.09, -98.84 | 86.91 | 12/12/2025 | 06:21:39 | -70.11, -98.87 | 86.90 | 2.26 | 59 |
| 12 | 12/12/2025 | 07:11:24 | 69.97, 68.64 | 92.97 | 12/12/2025 | 07:11:06 | 70.00, 68.62 | 93.00 | 2.79 | 18 |
| 13 | 12/12/2025 | 08:01:55 | -69.30,-123.05 | 87.71 | 12/12/2025 | 08:00:46 | -69.34,-124.64 | 87.65 | 62.93 | 69 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/30/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 11/30/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9