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: 9/26/2025
| 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 | 09/28/2025 | 14:54:01 | 70.07, -47.15 | 72.24 | 09/28/2025 | 14:54:30 | 70.06, -47.18 | 72.23 | 1.59 | 29 |
| 2 | 09/28/2025 | 15:44:42 | -69.95, 120.35 | 107.87 | 09/28/2025 | 15:44:00 | -69.94, 120.29 | 107.87 | 2.34 | 42 |
| 3 | 10/01/2025 | 06:20:15 | -70.48, -99.32 | 106.32 | 10/01/2025 | 06:21:26 | -70.42, -98.42 | 106.39 | 34.34 | 71 |
| 4 | 10/01/2025 | 07:10:53 | 70.03, 68.69 | 73.24 | 10/01/2025 | 07:10:58 | 70.04, 68.68 | 73.25 | 0.93 | 5 |
| 5 | 10/01/2025 | 08:01:34 | -69.91,-123.81 | 106.87 | 10/01/2025 | 08:00:28 | -69.93,-123.85 | 106.85 | 2.02 | 66 |
| 6 | 10/03/2025 | 22:37:00 | -70.09, 17.07 | 105.68 | 10/03/2025 | 22:37:59 | -70.09, 17.00 | 105.68 | 2.97 | 59 |
| 7 | 10/03/2025 | 23:27:45 | 70.01,-175.49 | 74.25 | 10/03/2025 | 23:27:26 | 69.98,-175.51 | 74.23 | 3.11 | 19 |
| 8 | 10/04/2025 | 00:18:15 | -69.31, -7.15 | 106.44 | 10/04/2025 | 00:17:06 | -69.32, -8.78 | 106.42 | 64.20 | 69 |
| 9 | 10/06/2025 | 14:53:52 | -70.08, 132.88 | 104.66 | 10/06/2025 | 14:54:25 | -70.10, 132.91 | 104.64 | 3.22 | 33 |
| 10 | 10/06/2025 | 15:44:36 | 69.94, -59.61 | 75.22 | 10/06/2025 | 15:43:53 | 69.94, -59.68 | 75.21 | 2.78 | 43 |
| 11 | 10/09/2025 | 06:20:06 | 70.41, 80.83 | 76.68 | 10/09/2025 | 06:21:18 | 70.29, 81.45 | 76.56 | 26.27 | 72 |
| 12 | 10/09/2025 | 07:10:42 | -70.02,-111.26 | 103.70 | 10/09/2025 | 07:10:51 | -70.02,-111.31 | 103.70 | 1.96 | 9 |
| 13 | 10/09/2025 | 08:01:26 | 69.89, 56.25 | 76.18 | 10/09/2025 | 08:00:18 | 69.91, 56.18 | 76.20 | 3.69 | 68 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/26/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/26/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8