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: 7/21/2025
| 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 | 07/21/2025 | 21:09:59 | -70.31, 38.95 | 129.99 | 07/21/2025 | 21:11:04 | -70.33, 39.00 | 129.98 | 2.59 | 65 |
| 2 | 07/21/2025 | 22:00:43 | 70.17,-153.52 | 49.87 | 07/21/2025 | 22:00:32 | 70.17,-153.59 | 49.88 | 2.44 | 11 |
| 3 | 07/21/2025 | 22:51:18 | -69.74, 14.45 | 130.58 | 07/21/2025 | 22:50:07 | -69.79, 13.50 | 130.48 | 36.74 | 71 |
| 4 | 07/24/2025 | 13:26:54 | -70.29, 154.76 | 129.46 | 07/24/2025 | 13:27:35 | -70.29, 154.82 | 129.47 | 2.16 | 41 |
| 5 | 07/24/2025 | 14:17:38 | 70.15, -37.71 | 50.40 | 07/24/2025 | 14:17:03 | 70.13, -37.77 | 50.39 | 3.18 | 35 |
| 6 | 07/27/2025 | 04:53:18 | 70.96, 102.12 | 51.84 | 07/27/2025 | 04:54:26 | 70.83, 103.88 | 51.63 | 65.60 | 68 |
| 7 | 07/27/2025 | 05:43:47 | -70.22, -89.35 | 128.95 | 07/27/2025 | 05:44:05 | -70.23, -89.38 | 128.93 | 2.29 | 18 |
| 8 | 07/27/2025 | 06:34:32 | 70.13, 78.09 | 50.97 | 07/27/2025 | 06:33:32 | 70.12, 78.11 | 50.97 | 0.81 | 60 |
| 9 | 07/29/2025 | 21:10:01 | 70.32,-141.05 | 51.79 | 07/29/2025 | 21:11:05 | 70.32,-141.01 | 51.77 | 1.72 | 64 |
| 10 | 07/29/2025 | 22:00:42 | -70.20, 26.46 | 128.34 | 07/29/2025 | 22:00:35 | -70.22, 26.48 | 128.32 | 2.33 | 7 |
| 11 | 07/29/2025 | 22:51:19 | 69.69,-165.47 | 51.14 | 07/29/2025 | 22:50:08 | 69.77,-166.50 | 51.27 | 40.88 | 71 |
| 12 | 08/01/2025 | 13:26:55 | 70.26, -25.18 | 52.38 | 08/01/2025 | 13:27:35 | 70.29, -25.17 | 52.40 | 3.19 | 40 |
| 13 | 08/01/2025 | 14:17:37 | -70.19, 142.25 | 127.69 | 08/01/2025 | 14:17:05 | -70.19, 142.32 | 127.68 | 2.59 | 32 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/21/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 07/21/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9