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: 7/4/2025
| 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 | 07/05/2025 | 06:20:25 | 70.10, 81.21 | 47.32 | 07/05/2025 | 06:21:04 | 70.12, 81.18 | 47.34 | 2.86 | 39 |
| 2 | 07/05/2025 | 07:11:07 | -70.03,-111.36 | 132.75 | 07/05/2025 | 07:10:34 | -70.01,-111.35 | 132.77 | 1.90 | 33 |
| 3 | 07/07/2025 | 21:46:49 | -70.84, 28.48 | 131.61 | 07/07/2025 | 21:47:57 | -70.72, 30.30 | 131.81 | 67.84 | 68 |
| 4 | 07/07/2025 | 22:37:21 | 70.09,-163.01 | 47.60 | 07/07/2025 | 22:37:34 | 70.07,-163.02 | 47.57 | 2.31 | 13 |
| 5 | 07/07/2025 | 23:28:02 | -69.95, 4.51 | 132.54 | 07/07/2025 | 23:27:04 | -69.96, 4.46 | 132.53 | 1.88 | 58 |
| 6 | 07/10/2025 | 14:03:31 | -70.15, 145.36 | 132.02 | 07/10/2025 | 14:04:35 | -70.16, 145.36 | 132.01 | 1.64 | 64 |
| 7 | 07/10/2025 | 14:54:15 | 70.03, -47.15 | 47.86 | 07/10/2025 | 14:54:02 | 70.05, -47.15 | 47.89 | 2.77 | 13 |
| 8 | 07/10/2025 | 15:44:49 | -69.52, 120.92 | 132.67 | 07/10/2025 | 15:43:38 | -69.62, 119.88 | 132.52 | 42.11 | 71 |
| 9 | 07/13/2025 | 06:20:27 | -70.14, -98.86 | 131.65 | 07/13/2025 | 06:21:04 | -70.13, -98.79 | 131.67 | 2.51 | 37 |
| 10 | 07/13/2025 | 07:11:11 | 70.02, 68.62 | 48.24 | 07/13/2025 | 07:10:31 | 70.02, 68.69 | 48.24 | 2.65 | 40 |
| 11 | 07/15/2025 | 21:46:48 | 70.60,-151.14 | 49.25 | 07/15/2025 | 21:47:58 | 70.47,-150.05 | 49.07 | 42.85 | 70 |
| 12 | 07/15/2025 | 22:37:22 | -70.08, 17.00 | 131.30 | 07/15/2025 | 22:37:33 | -70.09, 17.04 | 131.29 | 2.41 | 11 |
| 13 | 07/15/2025 | 23:28:06 | 69.97,-175.53 | 48.60 | 07/15/2025 | 23:27:00 | 69.98,-175.48 | 48.61 | 1.98 | 66 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/4/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/04/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8