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: 3/23/2025
| 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 | 03/23/2025 | 22:49:36 | 70.16,-166.09 | 68.73 | 03/23/2025 | 22:50:00 | 70.18,-166.02 | 68.74 | 2.89 | 24 |
| 2 | 03/23/2025 | 23:40:17 | -70.05, 1.41 | 111.41 | 03/23/2025 | 23:39:30 | -70.06, 1.45 | 111.39 | 2.44 | 47 |
| 3 | 03/26/2025 | 14:15:47 | -70.57, 141.77 | 111.90 | 03/26/2025 | 14:16:58 | -70.49, 142.67 | 112.01 | 34.36 | 71 |
| 4 | 03/26/2025 | 15:06:25 | 70.12, -50.22 | 67.62 | 03/26/2025 | 15:06:30 | 70.11, -50.24 | 67.62 | 1.18 | 5 |
| 5 | 03/26/2025 | 15:57:06 | -70.00, 117.28 | 112.52 | 03/26/2025 | 15:56:00 | -70.00, 117.24 | 112.51 | 1.53 | 66 |
| 6 | 03/29/2025 | 06:32:30 | -70.22,-101.89 | 113.31 | 03/29/2025 | 06:33:30 | -70.23,-101.83 | 113.31 | 2.38 | 60 |
| 7 | 03/29/2025 | 07:23:14 | 70.09, 65.62 | 66.55 | 03/29/2025 | 07:22:57 | 70.12, 65.66 | 66.57 | 3.17 | 17 |
| 8 | 03/29/2025 | 08:13:46 | -69.50,-126.18 | 114.09 | 03/29/2025 | 08:12:36 | -69.52,-127.54 | 114.02 | 53.23 | 70 |
| 9 | 03/31/2025 | 22:49:17 | -70.17, 14.00 | 114.41 | 03/31/2025 | 22:49:56 | -70.16, 13.95 | 114.43 | 2.29 | 39 |
| 10 | 03/31/2025 | 23:40:01 | 70.04,-178.50 | 65.45 | 03/31/2025 | 23:39:23 | 70.04,-178.57 | 65.45 | 2.71 | 38 |
| 11 | 04/03/2025 | 14:15:34 | 70.78, -38.50 | 65.22 | 04/03/2025 | 14:16:43 | 70.64, -37.07 | 65.03 | 54.78 | 69 |
| 12 | 04/03/2025 | 15:06:05 | -70.13, 129.86 | 115.48 | 04/03/2025 | 15:06:20 | -70.16, 129.85 | 115.46 | 2.63 | 15 |
| 13 | 04/03/2025 | 15:56:49 | 70.01, -62.64 | 64.38 | 04/03/2025 | 15:55:47 | 70.04, -62.68 | 64.42 | 3.28 | 62 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/23/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 03/23/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9