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: 7/17/2025
| 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 | 07/17/2025 | 06:44:48 | 70.06, 74.89 | 48.92 | 07/17/2025 | 06:45:53 | 70.06, 74.91 | 48.91 | 0.60 | 65 |
| 2 | 07/17/2025 | 07:35:29 | -69.94,-117.61 | 131.20 | 07/17/2025 | 07:35:23 | -69.94,-117.62 | 131.20 | 0.74 | 6 |
| 3 | 07/17/2025 | 08:26:07 | 69.48, 50.38 | 48.33 | 07/17/2025 | 08:24:56 | 69.51, 49.43 | 48.40 | 37.01 | 71 |
| 4 | 07/19/2025 | 23:01:43 | 70.02,-169.28 | 49.37 | 07/19/2025 | 23:02:24 | 70.02,-169.27 | 49.35 | 1.01 | 41 |
| 5 | 07/19/2025 | 23:52:24 | -69.90, -1.78 | 130.76 | 07/19/2025 | 23:51:54 | -69.91, -1.79 | 130.75 | 0.80 | 30 |
| 6 | 07/22/2025 | 14:28:07 | -70.86, 137.85 | 129.23 | 07/22/2025 | 14:29:14 | -70.78, 140.09 | 129.41 | 82.23 | 67 |
| 7 | 07/22/2025 | 15:18:37 | 69.99, -53.46 | 49.86 | 07/22/2025 | 15:18:54 | 69.96, -53.47 | 49.82 | 3.59 | 17 |
| 8 | 07/22/2025 | 16:09:18 | -69.87, 114.04 | 130.27 | 07/22/2025 | 16:08:24 | -69.86, 114.02 | 130.27 | 1.56 | 54 |
| 9 | 07/25/2025 | 06:44:47 | -70.05,-105.08 | 129.53 | 07/25/2025 | 06:45:57 | -70.06,-105.09 | 129.53 | 1.84 | 70 |
| 10 | 07/25/2025 | 07:35:32 | 69.97, 62.35 | 50.40 | 07/25/2025 | 07:35:24 | 69.95, 62.40 | 50.37 | 2.84 | 8 |
| 11 | 07/25/2025 | 08:26:09 | -69.63,-129.83 | 129.96 | 07/25/2025 | 08:24:57 | -69.68,-130.34 | 129.87 | 20.72 | 72 |
| 12 | 07/27/2025 | 23:01:42 | -70.02, 10.73 | 128.96 | 07/27/2025 | 23:02:27 | -70.04, 10.76 | 128.95 | 2.10 | 45 |
| 13 | 07/27/2025 | 23:52:26 | 69.89, 178.23 | 50.92 | 07/27/2025 | 23:51:54 | 69.92, 178.24 | 50.95 | 3.13 | 32 |
| 14 | 07/30/2025 | 14:28:09 | 70.82, -42.08 | 52.52 | 07/30/2025 | 14:29:16 | 70.70, -40.02 | 52.31 | 76.67 | 67 |
| 15 | 07/30/2025 | 15:18:37 | -70.00, 126.54 | 128.35 | 07/30/2025 | 15:18:57 | -70.00, 126.59 | 128.35 | 1.82 | 20 |
| 16 | 07/30/2025 | 16:09:21 | 69.88, -65.97 | 51.54 | 07/30/2025 | 16:08:24 | 69.88, -65.93 | 51.55 | 1.44 | 57 |
Figure of NOAA-20 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/17/2025
Download SNOs between NOAA-20 and LANDSAT-8 since TLE EPOCH: 07/17/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-8