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: 11/22/2025
| 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 | -70.11,-104.98 | 89.81 | 11/22/2025 | 06:46:21 | -70.12,-105.03 | 89.80 | 2.25 | 68 |
| 2 | 11/22/2025 | 07:35:58 | 70.04, 62.43 | 90.14 | 11/22/2025 | 07:35:48 | 70.02, 62.48 | 90.12 | 2.54 | 10 |
| 3 | 11/22/2025 | 08:26:34 | -69.63,-129.64 | 90.27 | 11/22/2025 | 08:25:22 | -69.69,-130.35 | 90.21 | 28.11 | 72 |
| 4 | 11/24/2025 | 23:02:13 | -70.08, 10.82 | 89.29 | 11/24/2025 | 23:02:53 | -70.06, 10.76 | 89.31 | 2.41 | 40 |
| 5 | 11/24/2025 | 23:52:57 | 69.96, 178.30 | 90.60 | 11/24/2025 | 23:52:20 | 69.96, 178.26 | 90.60 | 1.39 | 37 |
| 6 | 11/27/2025 | 14:28:38 | 70.52, -41.45 | 91.66 | 11/27/2025 | 14:29:49 | 70.42, -40.48 | 91.55 | 37.82 | 71 |
| 7 | 11/27/2025 | 15:19:13 | -70.05, 126.61 | 88.82 | 11/27/2025 | 15:19:24 | -70.04, 126.60 | 88.83 | 1.50 | 11 |
| 8 | 11/27/2025 | 16:09:57 | 69.94, -65.92 | 91.09 | 11/27/2025 | 16:08:51 | 69.93, -65.91 | 91.07 | 1.45 | 66 |
| 9 | 11/30/2025 | 06:45:30 | 70.09, 74.99 | 91.68 | 11/30/2025 | 06:46:25 | 70.09, 74.92 | 91.67 | 2.61 | 55 |
| 10 | 11/30/2025 | 07:36:12 | -69.98,-117.53 | 88.44 | 11/30/2025 | 07:35:55 | -69.99,-117.60 | 88.43 | 2.87 | 17 |
| 11 | 11/30/2025 | 08:26:42 | 69.13, 51.01 | 90.73 | 11/30/2025 | 08:25:35 | 69.16, 48.93 | 90.76 | 82.62 | 67 |
| 12 | 12/02/2025 | 23:02:29 | 70.08,-169.25 | 92.08 | 12/02/2025 | 23:02:54 | 70.07,-169.24 | 92.06 | 2.10 | 25 |
| 13 | 12/02/2025 | 23:53:11 | -69.96, -1.75 | 88.05 | 12/02/2025 | 23:52:24 | -69.96, -1.75 | 88.05 | 0.12 | 47 |
| 14 | 12/05/2025 | 14:28:45 | -70.17, 139.06 | 87.49 | 12/05/2025 | 14:29:57 | -70.13, 139.09 | 87.53 | 4.23 | 72 |
| 15 | 12/05/2025 | 15:19:28 | 70.03, -53.41 | 92.38 | 12/05/2025 | 15:19:24 | 70.02, -53.43 | 92.36 | 1.54 | 4 |
| 16 | 12/05/2025 | 16:10:08 | -69.80, 114.25 | 87.86 | 12/05/2025 | 16:08:55 | -69.86, 113.99 | 87.79 | 12.21 | 73 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/22/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/22/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9