Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-8 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/18/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-8) | Time (LANDSAT-8) | Lat,Lon (LANDSAT-8) | SZA (LANDSAT-8 ) | Distance(km) | Time Diff (sec) |
| 1 | 10/19/2025 | 22:36:47 | -70.57, 16.42 | 99.21 | 10/19/2025 | 22:37:57 | -70.44, 17.49 | 99.34 | 41.99 | 70 |
| 2 | 10/19/2025 | 23:27:24 | 70.05,-175.47 | 80.29 | 10/19/2025 | 23:27:29 | 70.07,-175.41 | 80.30 | 2.57 | 5 |
| 3 | 10/20/2025 | 00:18:05 | -69.95, -7.99 | 99.81 | 10/20/2025 | 00:16:59 | -69.95, -7.94 | 99.81 | 1.97 | 66 |
| 4 | 10/22/2025 | 14:53:30 | -70.14, 132.87 | 98.69 | 10/22/2025 | 14:54:30 | -70.14, 132.93 | 98.70 | 2.28 | 60 |
| 5 | 10/22/2025 | 15:44:14 | 70.00, -59.60 | 81.19 | 10/22/2025 | 15:43:57 | 70.03, -59.58 | 81.21 | 3.11 | 17 |
| 6 | 10/22/2025 | 16:34:46 | -69.42, 108.58 | 99.39 | 10/22/2025 | 16:33:35 | -69.48, 107.30 | 99.33 | 50.62 | 71 |
| 7 | 10/25/2025 | 07:10:20 | -70.10,-111.26 | 97.80 | 10/25/2025 | 07:10:58 | -70.07,-111.27 | 97.83 | 3.06 | 38 |
| 8 | 10/25/2025 | 08:01:04 | 69.96, 56.25 | 82.08 | 10/25/2025 | 08:00:25 | 69.96, 56.22 | 82.07 | 1.45 | 39 |
| 9 | 10/27/2025 | 22:36:37 | 70.65,-163.67 | 83.66 | 10/27/2025 | 22:37:46 | 70.57,-162.28 | 83.58 | 52.04 | 69 |
| 10 | 10/27/2025 | 23:27:09 | -70.06, 4.59 | 96.93 | 10/27/2025 | 23:27:23 | -70.08, 4.64 | 96.91 | 3.28 | 14 |
| 11 | 10/28/2025 | 00:17:53 | 69.93, 172.09 | 82.95 | 10/28/2025 | 00:16:51 | 69.91, 172.05 | 82.94 | 2.33 | 62 |
| 12 | 10/30/2025 | 14:53:17 | 70.10, -47.01 | 83.99 | 10/30/2025 | 14:54:20 | 70.11, -47.05 | 84.00 | 2.14 | 63 |
| 13 | 10/30/2025 | 15:43:59 | -70.03, 120.42 | 96.07 | 10/30/2025 | 15:43:50 | -70.01, 120.43 | 96.10 | 2.49 | 9 |
| 14 | 10/30/2025 | 16:34:34 | 69.43, -71.38 | 83.34 | 10/30/2025 | 16:33:24 | 69.51, -72.62 | 83.41 | 49.22 | 70 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 10/18/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 10/18/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8