Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/4/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 07/06/2025 | 14:28:53 | 70.12, -40.94 | 47.49 | 07/06/2025 | 14:29:16 | 70.09, -40.90 | 47.45 | 3.27 | 23 |
| 2 | 07/06/2025 | 15:19:34 | -69.99, 126.57 | 132.65 | 07/06/2025 | 15:18:46 | -69.98, 126.57 | 132.65 | 0.92 | 48 |
| 3 | 07/09/2025 | 05:55:06 | -70.29, -92.74 | 132.04 | 07/09/2025 | 05:56:17 | -70.25, -92.43 | 132.10 | 12.15 | 71 |
| 4 | 07/09/2025 | 06:45:48 | 70.06, 74.92 | 47.73 | 07/09/2025 | 06:45:46 | 70.04, 74.90 | 47.70 | 2.64 | 2 |
| 5 | 07/09/2025 | 07:36:29 | -69.92,-117.56 | 132.41 | 07/09/2025 | 07:35:16 | -69.93,-117.62 | 132.40 | 2.41 | 73 |
| 6 | 07/11/2025 | 22:11:59 | -70.12, 23.29 | 131.87 | 07/11/2025 | 22:12:48 | -70.13, 23.27 | 131.86 | 1.43 | 49 |
| 7 | 07/11/2025 | 23:02:43 | 70.00,-169.23 | 48.02 | 07/11/2025 | 23:02:15 | 70.02,-169.24 | 48.04 | 1.89 | 28 |
| 8 | 07/14/2025 | 13:38:28 | 70.99, -29.67 | 49.46 | 07/14/2025 | 13:39:34 | 70.91, -27.31 | 49.28 | 86.35 | 66 |
| 9 | 07/14/2025 | 14:28:55 | -70.11, 139.07 | 131.48 | 07/14/2025 | 14:29:17 | -70.10, 139.11 | 131.50 | 2.16 | 22 |
| 10 | 07/14/2025 | 15:19:39 | 70.00, -53.46 | 48.42 | 07/14/2025 | 15:18:44 | 69.98, -53.40 | 48.40 | 2.81 | 55 |
| 11 | 07/17/2025 | 05:55:07 | 70.16, 87.44 | 49.01 | 07/17/2025 | 05:56:15 | 70.15, 87.44 | 48.99 | 0.84 | 68 |
| 12 | 07/17/2025 | 06:45:49 | -70.05,-105.08 | 131.10 | 07/17/2025 | 06:45:45 | -70.05,-105.06 | 131.10 | 0.55 | 4 |
| 13 | 07/17/2025 | 07:36:28 | 69.68, 62.78 | 48.52 | 07/17/2025 | 07:35:16 | 69.71, 62.11 | 48.59 | 26.14 | 72 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/4/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/04/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9