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: 9/20/2025
| 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 | 09/23/2025 | 06:20:20 | 70.28, 80.96 | 70.38 | 09/23/2025 | 06:21:30 | 70.25, 81.33 | 70.34 | 14.30 | 70 |
| 2 | 09/23/2025 | 07:10:59 | -70.05,-111.36 | 109.85 | 09/23/2025 | 07:11:02 | -70.03,-111.36 | 109.87 | 2.31 | 3 |
| 3 | 09/23/2025 | 08:01:42 | 69.86, 56.22 | 69.98 | 09/23/2025 | 08:00:30 | 69.87, 56.07 | 69.99 | 5.82 | 72 |
| 4 | 09/25/2025 | 22:37:10 | 70.11,-163.00 | 71.24 | 09/25/2025 | 22:38:02 | 70.11,-163.00 | 71.24 | 0.26 | 52 |
| 5 | 09/25/2025 | 23:27:51 | -69.98, 4.52 | 108.88 | 09/25/2025 | 23:27:32 | -70.00, 4.48 | 108.86 | 2.12 | 19 |
| 6 | 09/26/2025 | 00:18:20 | 69.05, 173.17 | 70.21 | 09/26/2025 | 00:17:13 | 69.12, 170.94 | 70.29 | 88.71 | 67 |
| 7 | 09/28/2025 | 14:54:01 | 70.05, -47.12 | 72.22 | 09/28/2025 | 14:54:31 | 70.05, -47.19 | 72.22 | 2.63 | 30 |
| 8 | 09/28/2025 | 15:44:43 | -69.97, 120.31 | 107.84 | 09/28/2025 | 15:44:00 | -70.00, 120.37 | 107.82 | 3.40 | 43 |
| 9 | 10/01/2025 | 06:20:17 | -70.54, -99.43 | 106.25 | 10/01/2025 | 06:21:28 | -70.41, -98.43 | 106.40 | 39.82 | 71 |
| 10 | 10/01/2025 | 07:10:54 | 70.05, 68.66 | 73.26 | 10/01/2025 | 07:11:00 | 70.02, 68.66 | 73.24 | 2.66 | 6 |
| 11 | 10/01/2025 | 08:01:35 | -69.92,-123.83 | 106.86 | 10/01/2025 | 08:00:30 | -69.92,-123.86 | 106.86 | 1.00 | 65 |
| 12 | 10/03/2025 | 22:37:02 | -70.13, 17.01 | 105.64 | 10/03/2025 | 22:38:01 | -70.14, 17.07 | 105.63 | 2.72 | 59 |
| 13 | 10/03/2025 | 23:27:46 | 70.00,-175.49 | 74.25 | 10/03/2025 | 23:27:29 | 69.97,-175.53 | 74.22 | 3.29 | 17 |
| 14 | 10/04/2025 | 00:18:17 | -69.35, -7.21 | 106.40 | 10/04/2025 | 00:17:07 | -69.43, -8.64 | 106.31 | 56.77 | 70 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/20/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/20/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8