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: 10/5/2025
| 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 | 10/05/2025 | 06:45:26 | -70.13,-105.10 | 105.12 | 10/05/2025 | 06:46:20 | -70.12,-105.03 | 105.14 | 3.02 | 54 |
| 2 | 10/05/2025 | 07:36:10 | 69.99, 62.43 | 74.75 | 10/05/2025 | 07:35:48 | 69.96, 62.39 | 74.72 | 3.17 | 22 |
| 3 | 10/05/2025 | 08:26:38 | -69.19,-129.09 | 106.04 | 10/05/2025 | 08:25:29 | -69.24,-130.95 | 105.98 | 73.53 | 69 |
| 4 | 10/07/2025 | 23:02:17 | -70.08, 10.76 | 104.15 | 10/07/2025 | 23:02:52 | -70.08, 10.79 | 104.15 | 0.90 | 35 |
| 5 | 10/07/2025 | 23:53:02 | 69.99, 178.21 | 75.78 | 10/07/2025 | 23:52:19 | 69.97, 178.28 | 75.76 | 3.38 | 43 |
| 6 | 10/10/2025 | 14:28:37 | 70.68, -41.72 | 77.47 | 10/10/2025 | 14:29:46 | 70.54, -40.29 | 77.32 | 54.64 | 69 |
| 7 | 10/10/2025 | 15:19:08 | -70.04, 126.61 | 103.17 | 10/10/2025 | 15:19:23 | -70.05, 126.63 | 103.16 | 1.62 | 15 |
| 8 | 10/10/2025 | 16:09:53 | 69.95, -65.95 | 76.76 | 10/10/2025 | 16:08:50 | 69.95, -65.88 | 76.75 | 2.68 | 63 |
| 9 | 10/13/2025 | 06:45:18 | 70.13, 74.95 | 77.91 | 10/13/2025 | 06:46:23 | 70.14, 75.00 | 77.93 | 2.84 | 65 |
| 10 | 10/13/2025 | 07:35:59 | -70.01,-117.56 | 102.20 | 10/13/2025 | 07:35:54 | -69.99,-117.59 | 102.22 | 3.08 | 5 |
| 11 | 10/13/2025 | 08:26:37 | 69.55, 50.43 | 77.36 | 10/13/2025 | 08:25:26 | 69.60, 49.52 | 77.40 | 35.61 | 71 |
| 12 | 10/15/2025 | 23:02:08 | 70.11,-169.24 | 78.89 | 10/15/2025 | 23:02:52 | 70.09,-169.20 | 78.86 | 3.29 | 44 |
| 13 | 10/15/2025 | 23:52:49 | -70.00, -1.74 | 101.22 | 10/15/2025 | 23:52:22 | -69.99, -1.71 | 101.23 | 1.81 | 27 |
| 14 | 10/18/2025 | 15:18:58 | 70.06, -53.37 | 79.81 | 10/18/2025 | 15:19:21 | 70.04, -53.38 | 79.79 | 1.70 | 23 |
| 15 | 10/18/2025 | 16:09:39 | -69.94, 114.13 | 100.30 | 10/18/2025 | 16:08:51 | -69.94, 114.12 | 100.30 | 0.84 | 48 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/5/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 10/05/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9