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: 7/31/2025
| 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 | 07/31/2025 | 21:46:55 | 70.81,-151.50 | 52.83 | 07/31/2025 | 21:48:03 | 70.73,-149.67 | 52.66 | 67.62 | 68 |
| 2 | 07/31/2025 | 22:37:25 | -70.07, 17.00 | 127.96 | 07/31/2025 | 22:37:43 | -70.07, 16.99 | 127.96 | 0.29 | 18 |
| 3 | 07/31/2025 | 23:28:09 | 69.98,-175.55 | 51.96 | 07/31/2025 | 23:27:10 | 69.97,-175.51 | 51.96 | 1.76 | 59 |
| 4 | 08/03/2025 | 14:03:38 | 70.16, -34.69 | 52.82 | 08/03/2025 | 14:04:45 | 70.15, -34.66 | 52.80 | 1.67 | 67 |
| 5 | 08/03/2025 | 14:54:20 | -70.04, 132.81 | 127.30 | 08/03/2025 | 14:54:15 | -70.04, 132.83 | 127.30 | 0.76 | 5 |
| 6 | 08/03/2025 | 15:44:58 | 69.64, -59.28 | 52.29 | 08/03/2025 | 15:43:46 | 69.72, -59.98 | 52.41 | 28.86 | 72 |
| 7 | 08/06/2025 | 06:20:32 | 70.09, 81.19 | 53.47 | 08/06/2025 | 06:21:17 | 70.10, 81.15 | 53.47 | 1.82 | 45 |
| 8 | 08/06/2025 | 07:11:15 | -70.02,-111.39 | 126.60 | 08/06/2025 | 07:10:47 | -70.00,-111.37 | 126.62 | 3.06 | 28 |
| 9 | 08/08/2025 | 21:47:00 | -71.10, 28.02 | 124.73 | 08/08/2025 | 21:48:06 | -70.96, 30.66 | 124.97 | 96.70 | 66 |
| 10 | 08/08/2025 | 22:37:26 | 70.08,-163.02 | 54.21 | 08/08/2025 | 22:37:47 | 70.08,-163.00 | 54.21 | 1.06 | 21 |
| 11 | 08/08/2025 | 23:28:08 | -69.95, 4.48 | 125.92 | 08/08/2025 | 23:27:17 | -69.98, 4.49 | 125.88 | 3.40 | 51 |
| 12 | 08/11/2025 | 14:03:39 | -70.25, 145.17 | 124.84 | 08/11/2025 | 14:04:50 | -70.22, 145.43 | 124.89 | 10.27 | 71 |
| 13 | 08/11/2025 | 14:54:20 | 70.02, -47.16 | 54.93 | 08/11/2025 | 14:54:18 | 70.05, -47.17 | 54.96 | 3.48 | 2 |
| 14 | 08/11/2025 | 15:45:02 | -69.89, 120.35 | 125.20 | 08/11/2025 | 15:43:49 | -69.90, 120.25 | 125.18 | 4.10 | 73 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/31/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/31/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8