Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 11/21/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 11/22/2025 | 06:45:14 | -70.13,-105.02 | 89.79 | 11/22/2025 | 06:46:19 | -70.12,-105.02 | 89.80 | 1.14 | 65 |
| 2 | 11/22/2025 | 07:35:58 | 70.01, 62.47 | 90.11 | 11/22/2025 | 07:35:46 | 70.02, 62.48 | 90.11 | 0.61 | 12 |
| 3 | 11/22/2025 | 08:26:33 | -69.55,-129.52 | 90.35 | 11/22/2025 | 08:25:22 | -69.57,-130.50 | 90.33 | 38.05 | 71 |
| 4 | 11/24/2025 | 23:02:13 | -70.05, 10.87 | 89.32 | 11/24/2025 | 23:02:46 | -70.07, 10.80 | 89.30 | 3.46 | 33 |
| 5 | 11/24/2025 | 23:52:58 | 69.98, 178.27 | 90.63 | 11/24/2025 | 23:52:13 | 69.96, 178.29 | 90.60 | 3.09 | 45 |
| 6 | 11/27/2025 | 14:28:30 | 70.13, -40.82 | 91.26 | 11/27/2025 | 14:29:41 | 70.15, -40.82 | 91.28 | 2.96 | 71 |
| 7 | 11/27/2025 | 15:19:12 | -70.02, 126.66 | 88.85 | 11/27/2025 | 15:19:11 | -70.04, 126.66 | 88.83 | 2.69 | 1 |
| 8 | 11/27/2025 | 16:09:53 | 69.75, -65.63 | 90.89 | 11/27/2025 | 16:08:40 | 69.82, -66.00 | 90.96 | 16.14 | 73 |
| 9 | 11/30/2025 | 06:45:30 | 70.11, 74.95 | 91.70 | 11/30/2025 | 06:46:07 | 70.10, 75.01 | 91.68 | 2.35 | 37 |
| 10 | 11/30/2025 | 07:36:12 | -70.00,-117.56 | 88.42 | 11/30/2025 | 07:35:37 | -69.99,-117.51 | 88.42 | 1.72 | 35 |
| 11 | 12/02/2025 | 22:11:51 | -70.46, 22.86 | 87.56 | 12/02/2025 | 22:13:02 | -70.36, 23.63 | 87.66 | 30.92 | 71 |
| 12 | 12/02/2025 | 23:02:29 | 70.05,-169.20 | 92.04 | 12/02/2025 | 23:02:33 | 70.02,-169.20 | 92.01 | 3.17 | 4 |
| 13 | 12/02/2025 | 23:53:11 | -69.93, -1.70 | 88.08 | 12/02/2025 | 23:52:03 | -69.92, -1.72 | 88.09 | 1.69 | 68 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/21/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/21/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9