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: 8/23/2025
| 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 | 08/24/2025 | 22:37:25 | 70.09,-163.03 | 59.28 | 08/24/2025 | 22:37:51 | 70.06,-163.02 | 59.25 | 2.39 | 26 |
| 2 | 08/24/2025 | 23:28:07 | -69.97, 4.46 | 120.83 | 08/24/2025 | 23:27:21 | -69.95, 4.45 | 120.85 | 2.38 | 46 |
| 3 | 08/27/2025 | 14:03:39 | -70.35, 145.03 | 119.54 | 08/27/2025 | 14:04:51 | -70.26, 145.49 | 119.65 | 20.03 | 72 |
| 4 | 08/27/2025 | 14:54:19 | 70.05, -47.20 | 60.17 | 08/27/2025 | 14:54:20 | 70.04, -47.17 | 60.16 | 1.26 | 1 |
| 5 | 08/27/2025 | 15:45:01 | -69.93, 120.29 | 119.94 | 08/27/2025 | 15:43:50 | -69.93, 120.31 | 119.94 | 0.50 | 71 |
| 6 | 08/30/2025 | 06:20:28 | -70.10, -98.82 | 118.84 | 08/30/2025 | 06:21:21 | -70.12, -98.83 | 118.84 | 1.29 | 53 |
| 7 | 08/30/2025 | 07:11:12 | 70.02, 68.63 | 61.08 | 08/30/2025 | 07:10:48 | 70.01, 68.67 | 61.07 | 1.81 | 24 |
| 8 | 08/30/2025 | 08:01:39 | -69.10,-122.74 | 119.85 | 08/30/2025 | 08:00:31 | -69.18,-124.82 | 119.71 | 82.97 | 68 |
| 9 | 09/01/2025 | 22:37:22 | -70.07, 17.00 | 117.91 | 09/01/2025 | 22:37:50 | -70.07, 16.99 | 117.92 | 0.70 | 28 |
| 10 | 09/01/2025 | 23:28:05 | 69.93,-175.48 | 61.96 | 09/01/2025 | 23:27:17 | 69.96,-175.52 | 61.99 | 3.09 | 48 |
| 11 | 09/04/2025 | 14:03:36 | 70.27, -34.85 | 63.26 | 09/04/2025 | 14:04:47 | 70.22, -34.53 | 63.20 | 13.09 | 71 |
| 12 | 09/04/2025 | 14:54:16 | -70.05, 132.81 | 116.96 | 09/04/2025 | 14:54:18 | -70.06, 132.87 | 116.95 | 2.74 | 2 |
| 13 | 09/04/2025 | 15:44:59 | 69.91, -59.66 | 62.91 | 09/04/2025 | 15:43:46 | 69.89, -59.72 | 62.90 | 2.61 | 73 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 8/23/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 08/23/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8