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: 7/23/2025
| 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 | 07/23/2025 | 21:46:55 | -70.91, 28.35 | 128.92 | 07/23/2025 | 21:48:02 | -70.81, 30.43 | 129.11 | 76.65 | 67 |
| 2 | 07/23/2025 | 22:37:25 | 70.07,-163.00 | 50.20 | 07/23/2025 | 22:37:41 | 70.05,-163.04 | 50.18 | 2.42 | 16 |
| 3 | 07/23/2025 | 23:28:07 | -69.97, 4.47 | 129.90 | 07/23/2025 | 23:27:11 | -69.94, 4.44 | 129.92 | 3.35 | 56 |
| 4 | 07/26/2025 | 14:03:36 | -70.13, 145.36 | 129.17 | 07/26/2025 | 14:04:44 | -70.13, 145.31 | 129.18 | 2.23 | 68 |
| 5 | 07/26/2025 | 14:54:20 | 70.03, -47.17 | 50.74 | 07/26/2025 | 14:54:11 | 70.02, -47.20 | 50.73 | 1.57 | 9 |
| 6 | 07/26/2025 | 15:44:57 | -69.66, 120.70 | 129.64 | 07/26/2025 | 15:43:45 | -69.69, 119.98 | 129.58 | 27.97 | 72 |
| 7 | 07/29/2025 | 06:20:30 | -70.09, -98.81 | 128.59 | 07/29/2025 | 06:21:13 | -70.08, -98.87 | 128.61 | 2.78 | 43 |
| 8 | 07/29/2025 | 07:11:14 | 70.00, 68.64 | 51.33 | 07/29/2025 | 07:10:40 | 69.97, 68.62 | 51.30 | 3.36 | 34 |
| 9 | 07/31/2025 | 21:46:54 | 70.76,-151.41 | 52.77 | 07/31/2025 | 21:48:03 | 70.67,-149.76 | 52.60 | 61.46 | 69 |
| 10 | 07/31/2025 | 22:37:25 | -70.06, 17.01 | 127.97 | 07/31/2025 | 22:37:42 | -70.07, 17.00 | 127.96 | 1.54 | 17 |
| 11 | 07/31/2025 | 23:28:09 | 69.97,-175.55 | 51.95 | 07/31/2025 | 23:27:09 | 69.96,-175.52 | 51.95 | 1.96 | 60 |
| 12 | 08/03/2025 | 14:03:38 | 70.16, -34.68 | 52.82 | 08/03/2025 | 14:04:41 | 70.14, -34.65 | 52.79 | 1.99 | 63 |
| 13 | 08/03/2025 | 14:54:20 | -70.03, 132.82 | 127.31 | 08/03/2025 | 14:54:11 | -70.04, 132.84 | 127.30 | 1.67 | 9 |
| 14 | 08/03/2025 | 15:44:55 | 69.47, -59.04 | 52.12 | 08/03/2025 | 15:43:45 | 69.54, -60.21 | 52.24 | 46.03 | 70 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/23/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/23/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8