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: 4/16/2025
| 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 | 04/16/2025 | 21:59:32 | 70.23,-153.62 | 59.71 | 04/16/2025 | 22:00:32 | 70.21,-153.66 | 59.68 | 2.54 | 60 |
| 2 | 04/16/2025 | 22:50:14 | -70.16, 13.82 | 120.39 | 04/16/2025 | 22:50:01 | -70.15, 13.89 | 120.39 | 2.81 | 13 |
| 3 | 04/16/2025 | 23:40:47 | 69.43,-177.80 | 58.86 | 04/16/2025 | 23:39:38 | 69.50,-179.37 | 58.97 | 61.74 | 69 |
| 4 | 04/19/2025 | 14:16:30 | 70.19, -37.80 | 58.73 | 04/19/2025 | 14:16:58 | 70.21, -37.78 | 58.75 | 2.49 | 28 |
| 5 | 04/19/2025 | 15:07:12 | -70.11, 129.65 | 121.37 | 04/19/2025 | 15:06:28 | -70.10, 129.70 | 121.38 | 2.28 | 44 |
| 6 | 04/22/2025 | 05:42:46 | -70.34, -89.58 | 122.02 | 04/22/2025 | 05:43:57 | -70.33, -89.37 | 122.04 | 7.96 | 71 |
| 7 | 04/22/2025 | 06:33:29 | 70.16, 78.01 | 57.79 | 04/22/2025 | 06:33:25 | 70.16, 78.04 | 57.79 | 1.28 | 4 |
| 8 | 04/22/2025 | 07:24:09 | -69.97,-114.38 | 122.43 | 04/22/2025 | 07:22:56 | -70.00,-114.56 | 122.39 | 7.46 | 73 |
| 9 | 04/24/2025 | 21:59:43 | -70.21, 26.38 | 123.04 | 04/24/2025 | 22:00:24 | -70.24, 26.39 | 123.02 | 3.02 | 41 |
| 10 | 04/24/2025 | 22:50:27 | 70.09,-166.12 | 56.83 | 04/24/2025 | 22:49:51 | 70.12,-166.12 | 56.86 | 3.58 | 36 |
| 11 | 04/27/2025 | 13:26:05 | 70.56, -25.73 | 56.48 | 04/27/2025 | 13:27:16 | 70.48, -24.99 | 56.37 | 28.67 | 71 |
| 12 | 04/27/2025 | 14:16:41 | -70.15, 142.25 | 123.97 | 04/27/2025 | 14:16:50 | -70.16, 142.17 | 123.96 | 3.09 | 9 |
| 13 | 04/27/2025 | 15:07:25 | 70.04, -50.27 | 55.91 | 04/27/2025 | 15:06:17 | 70.04, -50.35 | 55.92 | 3.01 | 68 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/16/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 04/16/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9