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: 11/10/2025
| 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 | 11/11/2025 | 15:18:40 | -70.09, 126.67 | 92.42 | 11/11/2025 | 15:19:24 | -70.09, 126.67 | 92.42 | 0.13 | 44 |
| 2 | 11/11/2025 | 16:09:25 | 70.00, -65.89 | 87.51 | 11/11/2025 | 16:08:51 | 69.99, -65.83 | 87.49 | 2.89 | 34 |
| 3 | 11/14/2025 | 06:45:08 | 70.62, 74.26 | 88.82 | 11/14/2025 | 06:46:17 | 70.52, 75.54 | 88.72 | 48.70 | 69 |
| 4 | 11/14/2025 | 07:35:40 | -70.01,-117.46 | 91.79 | 11/14/2025 | 07:35:54 | -70.03,-117.54 | 91.77 | 3.29 | 14 |
| 5 | 11/14/2025 | 08:26:25 | 69.93, 49.97 | 88.15 | 11/14/2025 | 08:25:21 | 69.92, 49.96 | 88.13 | 1.60 | 64 |
| 6 | 11/16/2025 | 23:01:59 | 70.09,-169.15 | 88.96 | 11/16/2025 | 23:02:53 | 70.09,-169.20 | 88.96 | 2.21 | 54 |
| 7 | 11/16/2025 | 23:52:41 | -70.00, -1.69 | 91.13 | 11/16/2025 | 23:52:23 | -69.98, -1.72 | 91.15 | 2.41 | 18 |
| 8 | 11/17/2025 | 00:43:10 | 69.08, 166.95 | 87.97 | 11/17/2025 | 00:42:03 | 69.15, 164.80 | 88.03 | 85.76 | 67 |
| 9 | 11/19/2025 | 14:28:33 | -71.10, 137.66 | 89.40 | 11/19/2025 | 14:29:39 | -70.98, 140.37 | 89.52 | 98.76 | 66 |
| 10 | 11/19/2025 | 15:18:59 | 70.04, -53.32 | 89.54 | 11/19/2025 | 15:19:21 | 70.05, -53.37 | 89.55 | 2.03 | 22 |
| 11 | 11/19/2025 | 16:09:41 | -69.94, 114.14 | 90.55 | 11/19/2025 | 16:08:51 | -69.95, 114.12 | 90.55 | 0.87 | 50 |
| 12 | 11/22/2025 | 06:45:14 | -70.11,-104.99 | 89.81 | 11/22/2025 | 06:46:21 | -70.09,-105.06 | 89.83 | 3.72 | 67 |
| 13 | 11/22/2025 | 07:35:58 | 70.00, 62.49 | 90.10 | 11/22/2025 | 07:35:47 | 70.03, 62.49 | 90.12 | 2.97 | 11 |
| 14 | 11/22/2025 | 08:26:34 | -69.58,-129.57 | 90.32 | 11/22/2025 | 08:25:22 | -69.65,-130.40 | 90.25 | 32.91 | 72 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/10/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/10/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9