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: 11/19/2025
| 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 | 06:45:13 | -70.09,-104.96 | 89.83 | 11/22/2025 | 06:46:19 | -70.11,-105.03 | 89.81 | 3.58 | 66 |
| 2 | 11/22/2025 | 07:35:58 | 70.02, 62.45 | 90.12 | 11/22/2025 | 07:35:46 | 70.00, 62.46 | 90.10 | 2.36 | 12 |
| 3 | 11/22/2025 | 08:26:33 | -69.56,-129.54 | 90.34 | 11/22/2025 | 08:25:21 | -69.62,-130.44 | 90.29 | 35.50 | 72 |
| 4 | 11/24/2025 | 23:02:13 | -70.06, 10.85 | 89.31 | 11/24/2025 | 23:02:46 | -70.06, 10.78 | 89.32 | 2.46 | 33 |
| 5 | 11/24/2025 | 23:52:57 | 69.95, 178.33 | 90.59 | 11/24/2025 | 23:52:13 | 69.95, 178.27 | 90.59 | 2.02 | 44 |
| 6 | 11/27/2025 | 14:28:31 | 70.14, -40.84 | 91.27 | 11/27/2025 | 14:29:42 | 70.14, -40.84 | 91.27 | 0.17 | 71 |
| 7 | 11/27/2025 | 15:19:13 | -70.03, 126.64 | 88.84 | 11/27/2025 | 15:19:12 | -70.03, 126.64 | 88.84 | 0.12 | 1 |
| 8 | 11/27/2025 | 16:09:54 | 69.77, -65.65 | 90.91 | 11/27/2025 | 16:08:41 | 69.81, -66.02 | 90.95 | 14.96 | 73 |
| 9 | 11/30/2025 | 06:45:29 | 70.07, 75.01 | 91.66 | 11/30/2025 | 06:46:07 | 70.08, 74.98 | 91.67 | 1.73 | 38 |
| 10 | 11/30/2025 | 07:36:11 | -69.96,-117.49 | 88.46 | 11/30/2025 | 07:35:37 | -69.98,-117.53 | 88.44 | 2.68 | 34 |
| 11 | 12/02/2025 | 22:11:51 | -70.47, 22.84 | 87.54 | 12/02/2025 | 22:13:02 | -70.34, 23.60 | 87.68 | 32.15 | 71 |
| 12 | 12/02/2025 | 23:02:29 | 70.07,-169.22 | 92.06 | 12/02/2025 | 23:02:32 | 70.06,-169.15 | 92.05 | 2.67 | 3 |
| 13 | 12/02/2025 | 23:53:11 | -69.94, -1.72 | 88.07 | 12/02/2025 | 23:52:02 | -69.95, -1.67 | 88.06 | 2.25 | 69 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/19/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/19/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9