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: 7/6/2025
| 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 | 70.09, -40.89 | 47.45 | 07/06/2025 | 14:29:17 | 70.07, -40.94 | 47.43 | 2.43 | 24 |
| 2 | 07/06/2025 | 15:19:35 | -70.02, 126.54 | 132.62 | 07/06/2025 | 15:18:46 | -70.01, 126.62 | 132.62 | 3.01 | 49 |
| 3 | 07/09/2025 | 05:55:05 | -70.26, -92.70 | 132.07 | 07/09/2025 | 05:56:17 | -70.23, -92.47 | 132.12 | 9.08 | 72 |
| 4 | 07/09/2025 | 06:45:48 | 70.08, 74.89 | 47.75 | 07/09/2025 | 06:45:45 | 70.07, 74.94 | 47.73 | 2.51 | 3 |
| 5 | 07/09/2025 | 07:36:29 | -69.95,-117.59 | 132.39 | 07/09/2025 | 07:35:15 | -69.96,-117.58 | 132.37 | 1.51 | 74 |
| 6 | 07/11/2025 | 22:11:59 | -70.14, 23.25 | 131.84 | 07/11/2025 | 22:12:47 | -70.16, 23.31 | 131.84 | 3.04 | 48 |
| 7 | 07/11/2025 | 23:02:43 | 70.02,-169.26 | 48.04 | 07/11/2025 | 23:02:15 | 69.99,-169.28 | 48.02 | 3.18 | 28 |
| 8 | 07/14/2025 | 13:38:27 | 70.96, -29.62 | 49.42 | 07/14/2025 | 13:39:34 | 70.89, -27.35 | 49.25 | 83.00 | 67 |
| 9 | 07/14/2025 | 14:28:54 | -70.08, 139.12 | 131.51 | 07/14/2025 | 14:29:17 | -70.07, 139.08 | 131.52 | 1.58 | 23 |
| 10 | 07/14/2025 | 15:19:38 | 69.97, -53.41 | 48.38 | 07/14/2025 | 15:18:44 | 69.96, -53.44 | 48.38 | 1.53 | 54 |
| 11 | 07/17/2025 | 05:55:08 | 70.17, 87.42 | 49.03 | 07/17/2025 | 05:56:15 | 70.18, 87.49 | 49.02 | 2.66 | 67 |
| 12 | 07/17/2025 | 06:45:49 | -70.02,-105.03 | 131.13 | 07/17/2025 | 06:45:46 | -70.02,-105.10 | 131.13 | 2.83 | 3 |
| 13 | 07/17/2025 | 07:36:28 | 69.65, 62.83 | 48.49 | 07/17/2025 | 07:35:16 | 69.74, 62.15 | 48.62 | 28.28 | 72 |
| 14 | 07/19/2025 | 22:12:02 | 70.13,-156.74 | 49.46 | 07/19/2025 | 22:12:43 | 70.11,-156.72 | 49.44 | 1.80 | 41 |
| 15 | 07/19/2025 | 23:02:44 | -70.02, 10.74 | 130.65 | 07/19/2025 | 23:02:13 | -70.01, 10.78 | 130.65 | 1.29 | 31 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/6/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/06/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9