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: 7/13/2025
| 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 | 07/14/2025 | 13:38:30 | 71.11, -29.86 | 49.58 | 07/14/2025 | 13:39:36 | 71.01, -27.17 | 49.38 | 98.00 | 66 |
| 2 | 07/14/2025 | 14:28:54 | -70.08, 139.12 | 131.51 | 07/14/2025 | 14:29:21 | -70.08, 139.08 | 131.51 | 1.87 | 27 |
| 3 | 07/14/2025 | 15:19:38 | 69.96, -53.39 | 48.37 | 07/14/2025 | 15:18:48 | 69.98, -53.42 | 48.40 | 3.03 | 50 |
| 4 | 07/17/2025 | 05:55:10 | 70.27, 87.27 | 49.13 | 07/17/2025 | 05:56:21 | 70.25, 87.56 | 49.08 | 10.97 | 71 |
| 5 | 07/17/2025 | 06:45:50 | -70.07,-105.10 | 131.08 | 07/17/2025 | 06:45:52 | -70.09,-105.04 | 131.07 | 3.23 | 2 |
| 6 | 07/17/2025 | 07:36:33 | 69.90, 62.46 | 48.75 | 07/17/2025 | 07:35:20 | 69.92, 62.37 | 48.79 | 3.93 | 73 |
| 7 | 07/19/2025 | 22:12:02 | 70.11,-156.72 | 49.45 | 07/19/2025 | 22:12:53 | 70.12,-156.74 | 49.45 | 1.28 | 51 |
| 8 | 07/19/2025 | 23:02:44 | -70.01, 10.75 | 130.66 | 07/19/2025 | 23:02:23 | -70.02, 10.75 | 130.65 | 1.16 | 21 |
| 9 | 07/19/2025 | 23:53:11 | 69.00, 179.52 | 48.30 | 07/19/2025 | 23:52:05 | 69.08, 177.12 | 48.48 | 95.97 | 66 |
| 10 | 07/22/2025 | 14:28:57 | 70.07, -40.89 | 49.92 | 07/22/2025 | 14:29:24 | 70.09, -40.91 | 49.94 | 2.96 | 27 |
| 11 | 07/22/2025 | 15:19:40 | -70.01, 126.52 | 130.13 | 07/22/2025 | 15:18:54 | -70.00, 126.59 | 130.15 | 3.18 | 46 |
| 12 | 07/25/2025 | 05:55:14 | -70.43, -92.99 | 129.14 | 07/25/2025 | 05:56:25 | -70.33, -92.33 | 129.28 | 27.13 | 71 |
| 13 | 07/25/2025 | 06:45:52 | 70.03, 74.95 | 50.44 | 07/25/2025 | 06:45:55 | 70.05, 74.91 | 50.46 | 3.07 | 3 |
| 14 | 07/25/2025 | 07:36:35 | -69.96,-117.64 | 129.62 | 07/25/2025 | 07:35:25 | -69.96,-117.59 | 129.62 | 2.12 | 70 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/13/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/13/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9