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: 7/13/2025
| 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 | 07/13/2025 | 06:20:27 | -70.12, -98.83 | 131.67 | 07/13/2025 | 06:21:08 | -70.11, -98.84 | 131.69 | 1.03 | 41 |
| 2 | 07/13/2025 | 07:11:11 | 69.99, 68.67 | 48.20 | 07/13/2025 | 07:10:35 | 70.01, 68.66 | 48.22 | 1.57 | 36 |
| 3 | 07/15/2025 | 21:46:51 | 70.78,-151.43 | 49.44 | 07/15/2025 | 21:47:59 | 70.70,-149.73 | 49.29 | 62.96 | 68 |
| 4 | 07/15/2025 | 22:37:22 | -70.11, 16.95 | 131.26 | 07/15/2025 | 22:37:38 | -70.09, 17.02 | 131.28 | 2.87 | 16 |
| 5 | 07/15/2025 | 23:28:06 | 69.99,-175.56 | 48.62 | 07/15/2025 | 23:27:05 | 69.99,-175.49 | 48.63 | 2.89 | 61 |
| 6 | 07/18/2025 | 14:03:35 | 70.15, -34.66 | 49.24 | 07/18/2025 | 14:04:39 | 70.17, -34.63 | 49.25 | 2.89 | 64 |
| 7 | 07/18/2025 | 14:54:17 | -70.05, 132.81 | 130.86 | 07/18/2025 | 14:54:09 | -70.07, 132.86 | 130.85 | 2.70 | 8 |
| 8 | 07/18/2025 | 15:44:53 | 69.52, -59.09 | 48.59 | 07/18/2025 | 15:43:43 | 69.57, -60.18 | 48.69 | 42.94 | 70 |
| 9 | 07/21/2025 | 06:20:30 | 70.10, 81.18 | 49.69 | 07/21/2025 | 06:21:10 | 70.13, 81.19 | 49.71 | 3.01 | 40 |
| 10 | 07/21/2025 | 07:11:12 | -70.00,-111.34 | 130.42 | 07/21/2025 | 07:10:41 | -69.97,-111.40 | 130.44 | 3.37 | 31 |
| 11 | 07/23/2025 | 21:46:55 | -70.88, 28.39 | 128.95 | 07/23/2025 | 21:48:03 | -70.79, 30.40 | 129.13 | 74.24 | 68 |
| 12 | 07/23/2025 | 22:37:25 | 70.06,-162.98 | 50.19 | 07/23/2025 | 22:37:41 | 70.07,-163.01 | 50.20 | 1.82 | 16 |
| 13 | 07/23/2025 | 23:28:07 | -69.94, 4.50 | 129.93 | 07/23/2025 | 23:27:11 | -69.97, 4.48 | 129.89 | 3.20 | 56 |
| 14 | 07/26/2025 | 14:03:36 | -70.16, 145.32 | 129.14 | 07/26/2025 | 14:04:43 | -70.17, 145.37 | 129.14 | 2.72 | 67 |
| 15 | 07/26/2025 | 14:54:19 | 70.02, -47.15 | 50.73 | 07/26/2025 | 14:54:11 | 70.00, -47.23 | 50.71 | 3.27 | 8 |
| 16 | 07/26/2025 | 15:44:57 | -69.69, 120.65 | 129.62 | 07/26/2025 | 15:43:44 | -69.74, 120.04 | 129.53 | 24.41 | 73 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/13/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/13/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8