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: 7/21/2025
| 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 | 07/21/2025 | 06:20:30 | 70.12, 81.16 | 49.71 | 07/21/2025 | 06:21:10 | 70.11, 81.16 | 49.69 | 0.78 | 40 |
| 2 | 07/21/2025 | 07:11:12 | -70.02,-111.38 | 130.39 | 07/21/2025 | 07:10:40 | -70.00,-111.36 | 130.41 | 2.59 | 32 |
| 3 | 07/23/2025 | 21:46:55 | -70.91, 28.35 | 128.92 | 07/23/2025 | 21:48:02 | -70.81, 30.43 | 129.11 | 76.90 | 67 |
| 4 | 07/23/2025 | 22:37:25 | 70.08,-163.01 | 50.21 | 07/23/2025 | 22:37:41 | 70.05,-163.04 | 50.17 | 3.37 | 16 |
| 5 | 07/23/2025 | 23:28:07 | -69.97, 4.46 | 129.90 | 07/23/2025 | 23:27:10 | -69.99, 4.51 | 129.87 | 3.04 | 57 |
| 6 | 07/26/2025 | 14:03:36 | -70.13, 145.36 | 129.16 | 07/26/2025 | 14:04:44 | -70.13, 145.32 | 129.17 | 1.73 | 68 |
| 7 | 07/26/2025 | 14:54:20 | 70.04, -47.18 | 50.75 | 07/26/2025 | 14:54:11 | 70.03, -47.19 | 50.73 | 1.36 | 9 |
| 8 | 07/26/2025 | 15:44:57 | -69.66, 120.69 | 129.64 | 07/26/2025 | 15:43:45 | -69.70, 119.99 | 129.57 | 27.59 | 72 |
| 9 | 07/29/2025 | 06:20:30 | -70.09, -98.81 | 128.59 | 07/29/2025 | 06:21:13 | -70.10, -98.85 | 128.59 | 1.91 | 43 |
| 10 | 07/29/2025 | 07:11:14 | 70.00, 68.64 | 51.33 | 07/29/2025 | 07:10:40 | 69.99, 68.64 | 51.32 | 1.45 | 34 |
| 11 | 07/31/2025 | 21:46:55 | 70.81,-151.49 | 52.82 | 07/31/2025 | 21:48:03 | 70.70,-149.71 | 52.63 | 66.29 | 68 |
| 12 | 07/31/2025 | 22:37:25 | -70.05, 17.02 | 127.98 | 07/31/2025 | 22:37:43 | -70.05, 16.97 | 127.98 | 1.99 | 18 |
| 13 | 07/31/2025 | 23:28:09 | 69.97,-175.54 | 51.95 | 07/31/2025 | 23:27:10 | 69.94,-175.55 | 51.92 | 3.57 | 59 |
| 14 | 08/03/2025 | 14:03:38 | 70.15, -34.67 | 52.81 | 08/03/2025 | 14:04:42 | 70.14, -34.65 | 52.79 | 0.87 | 64 |
| 15 | 08/03/2025 | 14:54:20 | -70.02, 132.84 | 127.32 | 08/03/2025 | 14:54:12 | -70.04, 132.84 | 127.30 | 2.89 | 8 |
| 16 | 08/03/2025 | 15:44:56 | 69.52, -59.10 | 52.16 | 08/03/2025 | 15:43:45 | 69.60, -60.14 | 52.29 | 41.05 | 71 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/21/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/21/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8