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: 8/12/2025
| 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 | 08/14/2025 | 06:20:31 | -70.09, -98.81 | 124.20 | 08/14/2025 | 06:21:22 | -70.11, -98.85 | 124.19 | 2.60 | 51 |
| 2 | 08/14/2025 | 07:11:15 | 70.01, 68.63 | 55.73 | 08/14/2025 | 07:10:49 | 70.01, 68.65 | 55.73 | 0.71 | 26 |
| 3 | 08/14/2025 | 08:01:41 | -69.04,-122.65 | 125.27 | 08/14/2025 | 08:00:34 | -69.07,-124.98 | 125.15 | 92.66 | 67 |
| 4 | 08/16/2025 | 22:37:26 | -70.09, 16.97 | 123.36 | 08/16/2025 | 22:37:52 | -70.10, 17.02 | 123.36 | 2.35 | 26 |
| 5 | 08/16/2025 | 23:28:09 | 69.96,-175.52 | 56.51 | 08/16/2025 | 23:27:20 | 69.94,-175.57 | 56.50 | 2.48 | 49 |
| 6 | 08/19/2025 | 14:03:39 | 70.27, -34.86 | 57.68 | 08/19/2025 | 14:04:50 | 70.23, -34.54 | 57.62 | 12.46 | 71 |
| 7 | 08/19/2025 | 14:54:19 | -70.04, 132.81 | 122.55 | 08/19/2025 | 14:54:22 | -70.02, 132.78 | 122.58 | 2.47 | 3 |
| 8 | 08/19/2025 | 15:45:02 | 69.91, -59.68 | 57.32 | 08/19/2025 | 15:43:49 | 69.91, -59.73 | 57.33 | 2.05 | 73 |
| 9 | 08/22/2025 | 06:20:31 | 70.12, 81.15 | 58.41 | 08/22/2025 | 06:21:21 | 70.13, 81.19 | 58.41 | 2.20 | 50 |
| 10 | 08/22/2025 | 07:11:13 | -69.99,-111.34 | 121.72 | 08/22/2025 | 07:10:52 | -69.98,-111.40 | 121.73 | 2.85 | 21 |
| 11 | 08/22/2025 | 08:01:40 | 69.01, 57.38 | 57.28 | 08/22/2025 | 08:00:34 | 69.03, 54.98 | 57.38 | 95.86 | 66 |
| 12 | 08/24/2025 | 22:37:25 | 70.08,-163.02 | 59.27 | 08/24/2025 | 22:37:51 | 70.07,-163.01 | 59.26 | 1.35 | 26 |
| 13 | 08/24/2025 | 23:28:07 | -69.95, 4.49 | 120.85 | 08/24/2025 | 23:27:21 | -69.97, 4.48 | 120.83 | 1.93 | 46 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 8/12/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 08/12/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8