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: 8/31/2025
| 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 | 09/01/2025 | 22:37:22 | -70.09, 16.98 | 117.89 | 09/01/2025 | 22:37:55 | -70.08, 16.99 | 117.91 | 1.05 | 33 |
| 2 | 09/01/2025 | 23:28:06 | 69.99,-175.57 | 62.02 | 09/01/2025 | 23:27:22 | 69.98,-175.51 | 62.01 | 2.48 | 44 |
| 3 | 09/04/2025 | 14:03:40 | 70.51, -35.21 | 63.51 | 09/04/2025 | 14:04:51 | 70.41, -34.29 | 63.39 | 35.91 | 71 |
| 4 | 09/04/2025 | 14:54:15 | -70.03, 132.85 | 116.98 | 09/04/2025 | 14:54:26 | -70.03, 132.79 | 116.98 | 2.07 | 11 |
| 5 | 09/04/2025 | 15:44:59 | 69.93, -59.70 | 62.94 | 09/04/2025 | 15:43:53 | 69.92, -59.71 | 62.93 | 1.00 | 66 |
| 6 | 09/07/2025 | 06:20:26 | 70.08, 81.22 | 64.06 | 09/07/2025 | 06:21:26 | 70.10, 81.14 | 64.07 | 3.60 | 60 |
| 7 | 09/07/2025 | 07:11:08 | -69.98,-111.30 | 116.04 | 09/07/2025 | 07:10:56 | -70.00,-111.37 | 116.02 | 3.37 | 12 |
| 8 | 09/07/2025 | 08:01:41 | 69.30, 57.01 | 63.28 | 09/07/2025 | 08:00:32 | 69.39, 55.44 | 63.41 | 62.34 | 69 |
| 9 | 09/09/2025 | 22:37:19 | 70.10,-163.02 | 65.08 | 09/09/2025 | 22:37:54 | 70.09,-162.99 | 65.06 | 1.21 | 35 |
| 10 | 09/09/2025 | 23:28:01 | -69.99, 4.46 | 115.02 | 09/09/2025 | 23:27:24 | -69.98, 4.49 | 115.03 | 1.52 | 37 |
| 11 | 09/12/2025 | 14:03:39 | -70.74, 144.43 | 113.26 | 09/12/2025 | 14:04:48 | -70.59, 145.98 | 113.45 | 59.50 | 69 |
| 12 | 09/12/2025 | 14:54:12 | 70.06, -47.19 | 66.06 | 09/12/2025 | 14:54:23 | 70.04, -47.18 | 66.03 | 2.66 | 11 |
| 13 | 09/12/2025 | 15:44:54 | -69.96, 120.28 | 114.04 | 09/12/2025 | 15:43:53 | -69.94, 120.31 | 114.06 | 2.83 | 61 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 8/31/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 08/31/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8