Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NPP and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/6/2025
| Index | Date (NPP) | Time (NPP) | Lat,Lon (NPP) | SZA (NPP ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 10/07/2025 | 04:54:33 | -70.33, -76.97 | 104.18 | 10/07/2025 | 04:55:04 | -70.32, -76.93 | 104.20 | 2.12 | 31 |
| 2 | 10/07/2025 | 05:45:16 | 70.19, 90.57 | 75.69 | 10/07/2025 | 05:44:31 | 70.22, 90.57 | 75.72 | 3.27 | 45 |
| 3 | 10/09/2025 | 20:20:51 | 70.58,-128.91 | 77.07 | 10/09/2025 | 20:22:03 | 70.48,-128.46 | 76.97 | 19.98 | 72 |
| 4 | 10/09/2025 | 21:11:29 | -70.25, 38.93 | 103.25 | 10/09/2025 | 21:11:35 | -70.26, 38.86 | 103.24 | 3.27 | 6 |
| 5 | 10/09/2025 | 22:02:13 | 70.16,-153.62 | 76.68 | 10/09/2025 | 22:01:02 | 70.16,-153.65 | 76.68 | 1.22 | 71 |
| 6 | 10/12/2025 | 12:37:45 | 70.35, -12.77 | 77.85 | 10/12/2025 | 12:38:36 | 70.33, -12.80 | 77.83 | 2.27 | 51 |
| 7 | 10/12/2025 | 13:28:27 | -70.22, 154.74 | 102.26 | 10/12/2025 | 13:28:06 | -70.23, 154.68 | 102.27 | 2.20 | 21 |
| 8 | 10/12/2025 | 14:18:54 | 69.24, -36.48 | 76.77 | 10/12/2025 | 14:17:48 | 69.29, -38.97 | 76.81 | 98.01 | 66 |
| 9 | 10/15/2025 | 04:54:43 | 70.34, 103.02 | 78.83 | 10/15/2025 | 04:55:06 | 70.31, 103.05 | 78.81 | 3.14 | 23 |
| 10 | 10/15/2025 | 05:45:25 | -70.21, -89.47 | 101.28 | 10/15/2025 | 05:44:36 | -70.21, -89.47 | 101.29 | 0.58 | 49 |
| 11 | 10/17/2025 | 20:20:57 | -70.42, 51.35 | 100.12 | 10/17/2025 | 20:22:08 | -70.42, 51.45 | 100.12 | 3.82 | 71 |
| 12 | 10/17/2025 | 21:11:40 | 70.28,-141.13 | 79.76 | 10/17/2025 | 21:11:36 | 70.25,-141.15 | 79.73 | 3.32 | 4 |
| 13 | 10/17/2025 | 22:02:20 | -70.05, 26.55 | 100.46 | 10/17/2025 | 22:01:07 | -70.10, 26.26 | 100.42 | 12.06 | 73 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/6/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 10/06/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9