Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-20 and LANDSAT-8 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/24/2025
| Index | Date (NOAA-20) | Time (NOAA-20) | Lat,Lon (NOAA-20) | SZA (NOAA-20 ) | Date (LANDSAT-8) | Time (LANDSAT-8) | Lat,Lon (LANDSAT-8) | SZA (LANDSAT-8 ) | Distance(km) | Time Diff (sec) |
| 1 | 09/27/2025 | 07:35:09 | 70.03, 62.45 | 71.71 | 09/27/2025 | 07:35:44 | 70.02, 62.46 | 71.69 | 1.79 | 35 |
| 2 | 09/27/2025 | 08:25:51 | -69.93,-130.08 | 108.39 | 09/27/2025 | 08:25:14 | -69.91,-130.06 | 108.42 | 2.62 | 37 |
| 3 | 09/29/2025 | 23:01:27 | -70.68, 9.91 | 106.62 | 09/29/2025 | 23:02:36 | -70.57, 11.50 | 106.75 | 59.85 | 69 |
| 4 | 09/29/2025 | 23:52:00 | 70.00, 178.28 | 72.71 | 09/29/2025 | 23:52:11 | 70.02, 178.35 | 72.73 | 3.49 | 11 |
| 5 | 09/30/2025 | 00:42:42 | -69.90, -14.24 | 107.39 | 09/30/2025 | 00:41:41 | -69.91, -14.17 | 107.37 | 3.31 | 61 |
| 6 | 10/02/2025 | 15:18:08 | -70.08, 126.64 | 106.19 | 10/02/2025 | 15:19:12 | -70.10, 126.70 | 106.18 | 3.17 | 64 |
| 7 | 10/02/2025 | 16:08:51 | 69.93, -65.82 | 73.68 | 10/02/2025 | 16:08:40 | 69.93, -65.88 | 73.68 | 2.31 | 11 |
| 8 | 10/02/2025 | 16:59:27 | -69.51, 102.12 | 106.74 | 10/02/2025 | 16:58:15 | -69.55, 101.22 | 106.69 | 35.31 | 72 |
| 9 | 10/05/2025 | 07:34:59 | -70.01,-117.47 | 105.23 | 10/05/2025 | 07:35:40 | -70.03,-117.50 | 105.21 | 2.12 | 41 |
| 10 | 10/05/2025 | 08:25:43 | 69.92, 49.98 | 74.70 | 10/05/2025 | 08:25:07 | 69.91, 49.98 | 74.69 | 0.82 | 36 |
| 11 | 10/07/2025 | 23:01:19 | 70.65,-170.00 | 76.43 | 10/07/2025 | 23:02:28 | 70.57,-168.45 | 76.35 | 57.81 | 69 |
| 12 | 10/07/2025 | 23:51:51 | -70.01, -1.68 | 104.20 | 10/07/2025 | 23:52:06 | -70.03, -1.61 | 104.19 | 3.37 | 15 |
| 13 | 10/08/2025 | 00:42:34 | 69.87, 165.85 | 75.67 | 10/08/2025 | 00:41:34 | 69.86, 165.80 | 75.66 | 2.22 | 60 |
Figure of NOAA-20 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/24/2025
Download SNOs between NOAA-20 and LANDSAT-8 since TLE EPOCH: 09/24/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-8