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: 7/3/2025
| 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 | 07/03/2025 | 22:11:58 | 70.14,-156.73 | 47.24 | 07/03/2025 | 22:12:47 | 70.14,-156.73 | 47.23 | 0.19 | 49 |
| 2 | 07/03/2025 | 23:02:39 | -70.01, 10.77 | 132.89 | 07/03/2025 | 23:02:17 | -70.02, 10.74 | 132.88 | 1.46 | 22 |
| 3 | 07/06/2025 | 14:28:52 | 70.07, -40.87 | 47.43 | 07/06/2025 | 14:29:16 | 70.09, -40.91 | 47.45 | 2.99 | 24 |
| 4 | 07/06/2025 | 15:19:34 | -69.99, 126.57 | 132.65 | 07/06/2025 | 15:18:46 | -69.98, 126.57 | 132.65 | 1.09 | 48 |
| 5 | 07/09/2025 | 05:55:06 | -70.29, -92.74 | 132.04 | 07/09/2025 | 05:56:17 | -70.26, -92.43 | 132.10 | 12.28 | 71 |
| 6 | 07/09/2025 | 06:45:48 | 70.06, 74.91 | 47.73 | 07/09/2025 | 06:45:46 | 70.04, 74.90 | 47.70 | 2.79 | 2 |
| 7 | 07/09/2025 | 07:36:29 | -69.92,-117.56 | 132.41 | 07/09/2025 | 07:35:16 | -69.93,-117.62 | 132.39 | 2.28 | 73 |
| 8 | 07/11/2025 | 22:11:59 | -70.12, 23.29 | 131.86 | 07/11/2025 | 22:12:48 | -70.13, 23.28 | 131.86 | 1.62 | 49 |
| 9 | 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 |
| 10 | 07/14/2025 | 13:38:28 | 71.00, -29.68 | 49.46 | 07/14/2025 | 13:39:34 | 70.92, -27.30 | 49.28 | 86.76 | 66 |
| 11 | 07/14/2025 | 14:28:55 | -70.11, 139.06 | 131.48 | 07/14/2025 | 14:29:17 | -70.10, 139.12 | 131.49 | 2.32 | 22 |
| 12 | 07/14/2025 | 15:19:39 | 70.00, -53.46 | 48.42 | 07/14/2025 | 15:18:44 | 69.99, -53.40 | 48.41 | 2.93 | 55 |
| 13 | 07/17/2025 | 05:55:07 | 70.16, 87.44 | 49.01 | 07/17/2025 | 05:56:15 | 70.16, 87.46 | 49.00 | 0.62 | 68 |
| 14 | 07/17/2025 | 06:45:49 | -70.05,-105.08 | 131.10 | 07/17/2025 | 06:45:45 | -70.06,-105.05 | 131.09 | 1.51 | 4 |
| 15 | 07/17/2025 | 07:36:28 | 69.69, 62.78 | 48.53 | 07/17/2025 | 07:35:16 | 69.72, 62.12 | 48.60 | 25.59 | 72 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/3/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/03/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9