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: 9/26/2025
| 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 | 09/29/2025 | 04:54:22 | 70.33, 103.06 | 72.73 | 09/29/2025 | 04:55:00 | 70.31, 103.06 | 72.71 | 2.18 | 38 |
| 2 | 09/29/2025 | 05:45:04 | -70.21, -89.44 | 107.38 | 09/29/2025 | 05:44:30 | -70.20, -89.47 | 107.40 | 1.90 | 34 |
| 3 | 10/01/2025 | 20:20:45 | -70.82, 50.72 | 105.76 | 10/01/2025 | 20:21:55 | -70.76, 51.97 | 105.82 | 46.21 | 70 |
| 4 | 10/01/2025 | 21:11:20 | 70.26,-141.07 | 73.70 | 10/01/2025 | 21:11:29 | 70.27,-141.11 | 73.71 | 2.16 | 9 |
| 5 | 10/01/2025 | 22:02:03 | -70.19, 26.36 | 106.36 | 10/01/2025 | 22:00:59 | -70.16, 26.37 | 106.39 | 3.15 | 64 |
| 6 | 10/04/2025 | 12:37:34 | -70.33, 167.27 | 105.21 | 10/04/2025 | 12:38:29 | -70.35, 167.26 | 105.19 | 2.24 | 55 |
| 7 | 10/04/2025 | 13:28:18 | 70.25, -25.29 | 74.72 | 10/04/2025 | 13:27:56 | 70.24, -25.26 | 74.72 | 1.32 | 22 |
| 8 | 10/04/2025 | 14:18:46 | -69.39, 143.32 | 106.13 | 10/04/2025 | 14:17:38 | -69.48, 141.31 | 106.04 | 79.19 | 68 |
| 9 | 10/07/2025 | 04:04:07 | 71.30, 114.11 | 76.79 | 10/07/2025 | 04:05:12 | 71.22, 116.83 | 76.70 | 97.74 | 65 |
| 10 | 10/07/2025 | 04:54:32 | -70.28, -76.89 | 104.24 | 10/07/2025 | 04:54:57 | -70.29, -76.94 | 104.23 | 2.35 | 25 |
| 11 | 10/07/2025 | 05:45:16 | 70.20, 90.55 | 75.70 | 10/07/2025 | 05:44:24 | 70.18, 90.54 | 75.68 | 2.44 | 52 |
| 12 | 10/09/2025 | 20:20:48 | 70.37,-128.58 | 76.87 | 10/09/2025 | 20:21:54 | 70.35,-128.60 | 76.84 | 3.06 | 66 |
| 13 | 10/09/2025 | 21:11:30 | -70.24, 38.94 | 103.26 | 10/09/2025 | 21:11:24 | -70.24, 38.88 | 103.26 | 2.34 | 6 |
| 14 | 10/09/2025 | 22:02:07 | 69.79,-153.06 | 76.31 | 10/09/2025 | 22:00:56 | 69.85,-154.03 | 76.37 | 37.80 | 71 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/26/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 09/26/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9