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: 7/1/2025
| 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 | 07/01/2025 | 05:55:04 | 70.26, 87.31 | 47.16 | 07/01/2025 | 05:56:16 | 70.22, 87.50 | 47.10 | 8.73 | 72 |
| 2 | 07/01/2025 | 06:45:43 | -70.04,-105.03 | 133.08 | 07/01/2025 | 06:45:47 | -70.05,-105.10 | 133.07 | 3.28 | 4 |
| 3 | 07/01/2025 | 07:36:27 | 69.89, 62.50 | 46.78 | 07/01/2025 | 07:35:15 | 69.89, 62.32 | 46.79 | 6.67 | 72 |
| 4 | 07/03/2025 | 22:11:58 | 70.14,-156.73 | 47.24 | 07/03/2025 | 22:12:47 | 70.14,-156.73 | 47.23 | 0.36 | 49 |
| 5 | 07/03/2025 | 23:02:39 | -70.01, 10.78 | 132.89 | 07/03/2025 | 23:02:17 | -70.03, 10.75 | 132.87 | 2.08 | 22 |
| 6 | 07/06/2025 | 14:28:53 | 70.12, -40.95 | 47.49 | 07/06/2025 | 14:29:16 | 70.10, -40.89 | 47.46 | 3.20 | 23 |
| 7 | 07/06/2025 | 15:19:34 | -69.99, 126.57 | 132.65 | 07/06/2025 | 15:18:46 | -70.00, 126.59 | 132.64 | 0.76 | 48 |
| 8 | 07/09/2025 | 05:55:06 | -70.29, -92.74 | 132.04 | 07/09/2025 | 05:56:18 | -70.22, -92.49 | 132.13 | 12.31 | 72 |
| 9 | 07/09/2025 | 06:45:48 | 70.06, 74.91 | 47.73 | 07/09/2025 | 06:45:46 | 70.05, 74.92 | 47.72 | 1.19 | 2 |
| 10 | 07/09/2025 | 07:36:29 | -69.92,-117.56 | 132.41 | 07/09/2025 | 07:35:16 | -69.95,-117.59 | 132.38 | 3.18 | 73 |
| 11 | 07/11/2025 | 22:11:59 | -70.12, 23.28 | 131.86 | 07/11/2025 | 22:12:49 | -70.11, 23.24 | 131.89 | 2.36 | 50 |
| 12 | 07/11/2025 | 23:02:43 | 70.01,-169.23 | 48.02 | 07/11/2025 | 23:02:16 | 69.99,-169.28 | 48.01 | 2.57 | 27 |
| 13 | 07/11/2025 | 23:53:08 | -69.01, -0.48 | 133.01 | 07/11/2025 | 23:52:01 | -69.06, -2.90 | 132.86 | 96.42 | 67 |
| 14 | 07/14/2025 | 13:38:28 | 71.00, -29.68 | 49.47 | 07/14/2025 | 13:39:35 | 70.90, -27.33 | 49.26 | 86.15 | 67 |
| 15 | 07/14/2025 | 14:28:55 | -70.11, 139.06 | 131.48 | 07/14/2025 | 14:29:18 | -70.09, 139.10 | 131.51 | 2.92 | 23 |
| 16 | 07/14/2025 | 15:19:38 | 69.95, -53.39 | 48.37 | 07/14/2025 | 15:18:45 | 69.97, -53.43 | 48.39 | 2.33 | 53 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/1/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/01/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9