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: 10/18/2025
| 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 | 10/19/2025 | 23:26:30 | -70.10, 4.55 | 99.67 | 10/19/2025 | 23:27:38 | -70.09, 4.61 | 99.68 | 2.38 | 68 |
| 2 | 10/20/2025 | 00:17:14 | 69.97, 172.05 | 80.22 | 10/20/2025 | 00:17:05 | 69.98, 172.11 | 80.23 | 2.54 | 9 |
| 3 | 10/20/2025 | 01:07:51 | -69.62, -20.10 | 100.13 | 10/20/2025 | 01:06:39 | -69.65, -20.71 | 100.09 | 24.09 | 72 |
| 4 | 10/22/2025 | 15:43:31 | -70.02, 120.42 | 98.80 | 10/22/2025 | 15:44:07 | -70.04, 120.43 | 98.78 | 2.45 | 36 |
| 5 | 10/22/2025 | 16:34:15 | 69.89, -72.08 | 81.09 | 10/22/2025 | 16:33:35 | 69.88, -72.16 | 81.07 | 3.42 | 40 |
| 6 | 10/25/2025 | 07:09:52 | 70.20, 68.58 | 82.30 | 10/25/2025 | 07:11:03 | 70.17, 68.87 | 82.28 | 11.52 | 71 |
| 7 | 10/25/2025 | 08:00:31 | -69.95,-123.72 | 97.94 | 10/25/2025 | 08:00:35 | -69.96,-123.80 | 97.93 | 3.02 | 4 |
| 8 | 10/25/2025 | 08:51:15 | 69.82, 43.77 | 81.95 | 10/25/2025 | 08:50:02 | 69.85, 43.69 | 81.97 | 4.02 | 73 |
| 9 | 10/27/2025 | 23:26:51 | 70.03,-175.42 | 83.04 | 10/27/2025 | 23:27:32 | 70.05,-175.41 | 83.07 | 2.91 | 41 |
| 10 | 10/28/2025 | 00:17:33 | -69.94, -7.96 | 97.04 | 10/28/2025 | 00:17:02 | -69.95, -7.92 | 97.03 | 2.21 | 31 |
| 11 | 10/30/2025 | 14:53:16 | -70.52, 132.26 | 95.60 | 10/30/2025 | 14:54:27 | -70.40, 133.34 | 95.71 | 42.11 | 71 |
| 12 | 10/30/2025 | 15:43:52 | 69.97, -59.58 | 83.87 | 10/30/2025 | 15:44:00 | 69.96, -59.65 | 83.85 | 3.25 | 8 |
| 13 | 10/30/2025 | 16:34:34 | -69.88, 107.87 | 96.22 | 10/30/2025 | 16:33:30 | -69.86, 107.84 | 96.24 | 3.15 | 64 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/18/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 10/18/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9