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: 7/8/2025
| 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 | 07/10/2025 | 14:03:32 | -70.17, 145.33 | 132.00 | 07/10/2025 | 14:04:36 | -70.14, 145.33 | 132.04 | 3.40 | 64 |
| 2 | 07/10/2025 | 14:54:16 | 70.04, -47.17 | 47.88 | 07/10/2025 | 14:54:03 | 70.03, -47.18 | 47.87 | 0.94 | 13 |
| 3 | 07/10/2025 | 15:44:50 | -69.54, 120.89 | 132.65 | 07/10/2025 | 15:43:39 | -69.59, 119.85 | 132.54 | 41.12 | 71 |
| 4 | 07/13/2025 | 06:20:26 | -70.10, -98.81 | 131.69 | 07/13/2025 | 06:21:04 | -70.11, -98.82 | 131.69 | 1.27 | 38 |
| 5 | 07/13/2025 | 07:11:10 | 69.98, 68.68 | 48.19 | 07/13/2025 | 07:10:31 | 70.01, 68.67 | 48.22 | 2.45 | 39 |
| 6 | 07/15/2025 | 21:46:48 | 70.61,-151.16 | 49.27 | 07/15/2025 | 21:47:58 | 70.46,-150.07 | 49.06 | 43.91 | 70 |
| 7 | 07/15/2025 | 22:37:22 | -70.09, 16.97 | 131.28 | 07/15/2025 | 22:37:33 | -70.08, 17.02 | 131.30 | 2.52 | 11 |
| 8 | 07/15/2025 | 23:28:06 | 69.98,-175.55 | 48.61 | 07/15/2025 | 23:27:00 | 69.96,-175.50 | 48.60 | 2.75 | 66 |
| 9 | 07/18/2025 | 14:03:35 | 70.14, -34.64 | 49.23 | 07/18/2025 | 14:04:32 | 70.13, -34.66 | 49.21 | 1.24 | 57 |
| 10 | 07/18/2025 | 14:54:17 | -70.04, 132.83 | 130.88 | 07/18/2025 | 14:54:02 | -70.03, 132.83 | 130.89 | 1.12 | 15 |
| 11 | 07/18/2025 | 15:44:48 | 69.24, -58.70 | 48.30 | 07/18/2025 | 15:43:40 | 69.30, -60.51 | 48.44 | 71.70 | 68 |
| 12 | 07/21/2025 | 06:20:30 | 70.09, 81.20 | 49.68 | 07/21/2025 | 06:21:00 | 70.12, 81.22 | 49.70 | 2.98 | 30 |
| 13 | 07/21/2025 | 07:11:12 | -69.98,-111.32 | 130.43 | 07/21/2025 | 07:10:31 | -69.96,-111.37 | 130.45 | 2.81 | 41 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/8/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/08/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8