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: 9/23/2025
| 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 | 09/25/2025 | 22:37:10 | 70.13,-163.04 | 71.27 | 09/25/2025 | 22:38:01 | 70.12,-162.97 | 71.25 | 2.81 | 51 |
| 2 | 09/25/2025 | 23:27:51 | -70.01, 4.47 | 108.85 | 09/25/2025 | 23:27:31 | -70.01, 4.50 | 108.85 | 1.11 | 20 |
| 3 | 09/26/2025 | 00:18:19 | 69.03, 173.20 | 70.18 | 09/26/2025 | 00:17:13 | 69.07, 170.89 | 70.25 | 92.25 | 66 |
| 4 | 09/28/2025 | 14:54:02 | 70.09, -47.18 | 72.26 | 09/28/2025 | 14:54:30 | 70.09, -47.14 | 72.26 | 1.66 | 28 |
| 5 | 09/28/2025 | 15:44:43 | -69.96, 120.32 | 107.85 | 09/28/2025 | 15:44:00 | -69.97, 120.34 | 107.84 | 1.29 | 43 |
| 6 | 10/01/2025 | 06:20:16 | -70.50, -99.35 | 106.30 | 10/01/2025 | 06:21:27 | -70.39, -98.45 | 106.41 | 35.45 | 71 |
| 7 | 10/01/2025 | 07:10:54 | 70.05, 68.65 | 73.27 | 10/01/2025 | 07:10:58 | 70.07, 68.72 | 73.28 | 3.14 | 4 |
| 8 | 10/01/2025 | 08:01:35 | -69.93,-123.84 | 106.85 | 10/01/2025 | 08:00:29 | -69.90,-123.87 | 106.87 | 3.03 | 66 |
| 9 | 10/03/2025 | 22:37:00 | -70.11, 17.05 | 105.66 | 10/03/2025 | 22:37:58 | -70.12, 17.05 | 105.65 | 1.89 | 58 |
| 10 | 10/03/2025 | 23:27:45 | 70.03,-175.52 | 74.28 | 10/03/2025 | 23:27:25 | 70.01,-175.47 | 74.26 | 2.82 | 20 |
| 11 | 10/04/2025 | 00:18:14 | -69.27, -7.10 | 106.48 | 10/04/2025 | 00:17:05 | -69.35, -8.73 | 106.39 | 64.96 | 69 |
| 12 | 10/06/2025 | 14:53:52 | -70.09, 132.85 | 104.65 | 10/06/2025 | 14:54:25 | -70.09, 132.89 | 104.66 | 1.50 | 33 |
| 13 | 10/06/2025 | 15:44:36 | 69.96, -59.64 | 75.24 | 10/06/2025 | 15:43:52 | 69.97, -59.63 | 75.25 | 1.21 | 44 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/23/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/23/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8