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: 7/5/2025
| 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 | 70.08, -40.88 | 47.44 | 07/06/2025 | 14:29:17 | 70.08, -40.93 | 47.44 | 1.66 | 24 |
| 2 | 07/06/2025 | 15:19:34 | -69.95, 126.63 | 132.69 | 07/06/2025 | 15:18:47 | -69.97, 126.55 | 132.67 | 3.41 | 47 |
| 3 | 07/09/2025 | 05:55:06 | -70.30, -92.76 | 132.03 | 07/09/2025 | 05:56:17 | -70.24, -92.46 | 132.11 | 13.48 | 71 |
| 4 | 07/09/2025 | 06:45:48 | 70.07, 74.90 | 47.74 | 07/09/2025 | 06:45:45 | 70.07, 74.95 | 47.74 | 1.98 | 3 |
| 5 | 07/09/2025 | 07:36:29 | -69.94,-117.58 | 132.40 | 07/09/2025 | 07:35:15 | -69.97,-117.57 | 132.36 | 3.25 | 74 |
| 6 | 07/11/2025 | 22:11:59 | -70.13, 23.27 | 131.85 | 07/11/2025 | 22:12:48 | -70.11, 23.24 | 131.88 | 2.60 | 49 |
| 7 | 07/11/2025 | 23:02:43 | 70.01,-169.24 | 48.03 | 07/11/2025 | 23:02:15 | 70.00,-169.27 | 48.02 | 1.99 | 28 |
| 8 | 07/14/2025 | 13:38:28 | 71.00, -29.69 | 49.47 | 07/14/2025 | 13:39:34 | 70.89, -27.35 | 49.25 | 86.02 | 66 |
| 9 | 07/14/2025 | 14:28:54 | -70.06, 139.13 | 131.52 | 07/14/2025 | 14:29:17 | -70.07, 139.08 | 131.52 | 2.22 | 23 |
| 10 | 07/14/2025 | 15:19:38 | 69.95, -53.39 | 48.37 | 07/14/2025 | 15:18:44 | 69.96, -53.44 | 48.38 | 1.86 | 54 |
| 11 | 07/17/2025 | 05:55:08 | 70.16, 87.44 | 49.01 | 07/17/2025 | 05:56:15 | 70.17, 87.48 | 49.01 | 2.26 | 67 |
| 12 | 07/17/2025 | 06:45:50 | -70.06,-105.09 | 131.09 | 07/17/2025 | 06:45:45 | -70.08,-105.03 | 131.08 | 3.09 | 5 |
| 13 | 07/17/2025 | 07:36:28 | 69.64, 62.85 | 48.47 | 07/17/2025 | 07:35:17 | 69.68, 62.07 | 48.56 | 30.68 | 71 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/5/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/05/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9