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: 10/9/2025
| 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 | 10/09/2025 | 06:20:15 | 70.89, 80.05 | 77.17 | 10/09/2025 | 06:21:22 | 70.77, 82.10 | 77.05 | 76.18 | 67 |
| 2 | 10/09/2025 | 07:10:42 | -70.05,-111.29 | 103.68 | 10/09/2025 | 07:11:03 | -70.06,-111.32 | 103.67 | 1.62 | 21 |
| 3 | 10/09/2025 | 08:01:27 | 69.95, 56.16 | 76.25 | 10/09/2025 | 08:00:30 | 69.96, 56.18 | 76.25 | 1.04 | 57 |
| 4 | 10/11/2025 | 22:36:53 | 70.17,-163.01 | 77.45 | 10/11/2025 | 22:38:03 | 70.15,-162.94 | 77.43 | 3.24 | 70 |
| 5 | 10/11/2025 | 23:27:34 | -70.06, 4.48 | 102.65 | 10/11/2025 | 23:27:33 | -70.04, 4.54 | 102.67 | 3.09 | 1 |
| 6 | 10/12/2025 | 00:18:15 | 69.75, 172.24 | 77.06 | 10/12/2025 | 00:17:02 | 69.82, 171.88 | 77.13 | 15.93 | 73 |
| 7 | 10/14/2025 | 14:53:43 | 70.08, -47.09 | 78.37 | 10/14/2025 | 14:54:33 | 70.10, -47.12 | 78.38 | 2.53 | 50 |
| 8 | 10/14/2025 | 15:44:24 | -69.97, 120.39 | 101.74 | 10/14/2025 | 15:44:03 | -70.00, 120.36 | 101.72 | 2.95 | 21 |
| 9 | 10/14/2025 | 16:34:52 | 68.98, -70.86 | 77.29 | 10/14/2025 | 16:33:46 | 69.00, -73.33 | 77.31 | 98.47 | 66 |
| 10 | 10/17/2025 | 07:10:33 | 70.06, 68.73 | 79.33 | 10/17/2025 | 07:11:01 | 70.09, 68.73 | 79.35 | 2.87 | 28 |
| 11 | 10/17/2025 | 08:01:15 | -70.00,-123.86 | 100.72 | 10/17/2025 | 08:00:31 | -69.98,-123.78 | 100.75 | 3.67 | 44 |
| 12 | 10/19/2025 | 22:36:47 | -70.55, 16.45 | 99.23 | 10/19/2025 | 22:37:58 | -70.43, 17.47 | 99.35 | 40.38 | 71 |
| 13 | 10/19/2025 | 23:27:24 | 70.05,-175.46 | 80.28 | 10/19/2025 | 23:27:30 | 70.04,-175.44 | 80.28 | 0.75 | 6 |
| 14 | 10/20/2025 | 00:18:05 | -69.93, -7.96 | 99.83 | 10/20/2025 | 00:17:00 | -69.94, -7.95 | 99.82 | 1.29 | 65 |
| 15 | 10/22/2025 | 14:53:30 | -70.12, 132.91 | 98.71 | 10/22/2025 | 14:54:31 | -70.15, 132.94 | 98.69 | 3.16 | 61 |
| 16 | 10/22/2025 | 15:44:14 | 69.99, -59.58 | 81.17 | 10/22/2025 | 15:43:59 | 69.97, -59.65 | 81.16 | 3.17 | 15 |
| 17 | 10/22/2025 | 16:34:47 | -69.44, 108.54 | 99.36 | 10/22/2025 | 16:33:36 | -69.49, 107.31 | 99.32 | 48.17 | 71 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 10/9/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 10/09/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8