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: 11/8/2025
| 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 | 11/08/2025 | 23:01:42 | -70.23, 10.72 | 93.03 | 11/08/2025 | 23:02:54 | -70.17, 10.91 | 93.09 | 9.37 | 72 |
| 2 | 11/08/2025 | 23:52:24 | 70.03, 178.32 | 86.79 | 11/08/2025 | 23:52:21 | 70.01, 178.33 | 86.77 | 1.89 | 3 |
| 3 | 11/09/2025 | 00:43:04 | -69.85, -14.09 | 93.38 | 11/09/2025 | 00:41:51 | -69.90, -14.19 | 93.34 | 6.82 | 73 |
| 4 | 11/11/2025 | 15:18:40 | -70.09, 126.68 | 92.42 | 11/11/2025 | 15:19:24 | -70.10, 126.68 | 92.41 | 1.60 | 44 |
| 5 | 11/11/2025 | 16:09:25 | 70.00, -65.89 | 87.51 | 11/11/2025 | 16:08:51 | 69.99, -65.82 | 87.49 | 2.65 | 34 |
| 6 | 11/14/2025 | 06:45:08 | 70.62, 74.27 | 88.82 | 11/14/2025 | 06:46:18 | 70.48, 75.49 | 88.68 | 47.83 | 70 |
| 7 | 11/14/2025 | 07:35:41 | -70.06,-117.54 | 91.74 | 11/14/2025 | 07:35:54 | -70.05,-117.51 | 91.75 | 1.90 | 13 |
| 8 | 11/14/2025 | 08:26:25 | 69.93, 49.97 | 88.15 | 11/14/2025 | 08:25:21 | 69.94, 49.98 | 88.15 | 0.66 | 64 |
| 9 | 11/16/2025 | 23:01:59 | 70.09,-169.15 | 88.96 | 11/16/2025 | 23:02:53 | 70.12,-169.16 | 88.99 | 3.33 | 54 |
| 10 | 11/16/2025 | 23:52:41 | -70.00, -1.69 | 91.13 | 11/16/2025 | 23:52:23 | -70.02, -1.67 | 91.11 | 2.20 | 18 |
| 11 | 11/17/2025 | 00:43:11 | 69.13, 166.88 | 88.02 | 11/17/2025 | 00:42:03 | 69.18, 164.84 | 88.07 | 80.83 | 68 |
| 12 | 11/19/2025 | 15:18:59 | 70.04, -53.32 | 89.55 | 11/19/2025 | 15:19:22 | 70.05, -53.37 | 89.55 | 2.07 | 23 |
| 13 | 11/19/2025 | 16:09:40 | -69.94, 114.15 | 90.55 | 11/19/2025 | 16:08:51 | -69.95, 114.12 | 90.55 | 1.19 | 49 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/8/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/08/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9