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: 7/16/2025
| 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 | 07/18/2025 | 14:03:35 | 70.16, -34.68 | 49.25 | 07/18/2025 | 14:04:39 | 70.16, -34.65 | 49.23 | 1.45 | 64 |
| 2 | 07/18/2025 | 14:54:17 | -70.07, 132.78 | 130.84 | 07/18/2025 | 14:54:09 | -70.05, 132.83 | 130.87 | 2.89 | 8 |
| 3 | 07/18/2025 | 15:44:53 | 69.53, -59.11 | 48.60 | 07/18/2025 | 15:43:42 | 69.61, -60.13 | 48.73 | 40.54 | 71 |
| 4 | 07/21/2025 | 06:20:30 | 70.12, 81.16 | 49.71 | 07/21/2025 | 06:21:10 | 70.11, 81.17 | 49.69 | 0.54 | 40 |
| 5 | 07/21/2025 | 07:11:12 | -70.01,-111.37 | 130.40 | 07/21/2025 | 07:10:40 | -70.01,-111.35 | 130.40 | 1.07 | 32 |
| 6 | 07/23/2025 | 21:46:55 | -70.90, 28.36 | 128.93 | 07/23/2025 | 21:48:03 | -70.77, 30.37 | 129.15 | 74.97 | 68 |
| 7 | 07/23/2025 | 22:37:25 | 70.07,-163.01 | 50.20 | 07/23/2025 | 22:37:41 | 70.06,-163.03 | 50.18 | 2.09 | 16 |
| 8 | 07/23/2025 | 23:28:07 | -69.96, 4.48 | 129.91 | 07/23/2025 | 23:27:11 | -69.95, 4.46 | 129.91 | 1.26 | 56 |
| 9 | 07/26/2025 | 14:03:37 | -70.17, 145.29 | 129.12 | 07/26/2025 | 14:04:44 | -70.16, 145.35 | 129.15 | 2.89 | 67 |
| 10 | 07/26/2025 | 14:54:20 | 70.03, -47.18 | 50.74 | 07/26/2025 | 14:54:11 | 70.04, -47.17 | 50.75 | 1.02 | 9 |
| 11 | 07/26/2025 | 15:44:57 | -69.65, 120.71 | 129.65 | 07/26/2025 | 15:43:45 | -69.72, 120.02 | 129.55 | 27.79 | 72 |
| 12 | 07/29/2025 | 06:20:31 | -70.13, -98.87 | 128.55 | 07/29/2025 | 06:21:13 | -70.13, -98.81 | 128.56 | 2.33 | 42 |
| 13 | 07/29/2025 | 07:11:14 | 69.99, 68.65 | 51.32 | 07/29/2025 | 07:10:40 | 70.01, 68.67 | 51.34 | 2.23 | 34 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/16/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/16/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8