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: 10/31/2025
| 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 | 11/02/2025 | 20:21:09 | -70.36, 51.44 | 94.72 | 11/02/2025 | 20:22:05 | -70.39, 51.41 | 94.70 | 3.09 | 56 |
| 2 | 11/02/2025 | 21:11:54 | 70.30,-141.16 | 85.23 | 11/02/2025 | 21:11:32 | 70.28,-141.09 | 85.21 | 3.11 | 22 |
| 3 | 11/02/2025 | 22:02:22 | -69.47, 27.42 | 95.59 | 11/02/2025 | 22:01:14 | -69.52, 25.47 | 95.55 | 76.12 | 68 |
| 4 | 11/05/2025 | 12:38:05 | -70.37, 167.20 | 93.89 | 11/05/2025 | 12:38:36 | -70.34, 167.22 | 93.92 | 2.98 | 31 |
| 5 | 11/05/2025 | 13:28:49 | 70.26, -25.31 | 86.01 | 11/05/2025 | 13:28:03 | 70.24, -25.29 | 85.99 | 2.49 | 46 |
| 6 | 11/08/2025 | 04:04:23 | 70.64, 115.23 | 87.16 | 11/08/2025 | 04:05:35 | 70.54, 115.75 | 87.06 | 22.10 | 72 |
| 7 | 11/08/2025 | 04:55:01 | -70.34, -76.96 | 93.14 | 11/08/2025 | 04:55:07 | -70.33, -76.93 | 93.15 | 1.55 | 6 |
| 8 | 11/08/2025 | 05:45:45 | 70.22, 90.52 | 86.77 | 11/08/2025 | 05:44:34 | 70.21, 90.55 | 86.75 | 1.34 | 71 |
| 9 | 11/10/2025 | 20:21:15 | 70.40,-128.61 | 87.68 | 11/10/2025 | 20:22:08 | 70.38,-128.61 | 87.66 | 2.73 | 53 |
| 10 | 11/10/2025 | 21:11:56 | -70.26, 38.94 | 92.46 | 11/10/2025 | 21:11:38 | -70.28, 38.87 | 92.44 | 3.43 | 18 |
| 11 | 11/10/2025 | 22:02:25 | 69.35,-152.39 | 86.66 | 11/10/2025 | 22:01:19 | 69.39,-154.71 | 86.68 | 91.05 | 66 |
| 12 | 11/13/2025 | 12:38:10 | 70.33, -12.71 | 88.33 | 11/13/2025 | 12:38:38 | 70.35, -12.77 | 88.35 | 3.24 | 28 |
| 13 | 11/13/2025 | 13:28:52 | -70.24, 154.75 | 91.75 | 11/13/2025 | 13:28:08 | -70.25, 154.72 | 91.74 | 2.08 | 44 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/31/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 10/31/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9