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: 5/20/2025
| 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 | 05/21/2025 | 13:26:25 | -70.28, 154.68 | 130.11 | 05/21/2025 | 13:27:13 | -70.28, 154.68 | 130.11 | 0.07 | 48 |
| 2 | 05/21/2025 | 14:17:09 | 70.19, -37.86 | 49.79 | 05/21/2025 | 14:16:40 | 70.18, -37.82 | 49.79 | 1.82 | 29 |
| 3 | 05/24/2025 | 04:52:53 | 71.04, 101.88 | 50.19 | 05/24/2025 | 04:54:01 | 70.93, 103.89 | 50.02 | 73.95 | 68 |
| 4 | 05/24/2025 | 05:43:22 | -70.24, -89.49 | 130.66 | 05/24/2025 | 05:43:41 | -70.26, -89.47 | 130.64 | 2.41 | 19 |
| 5 | 05/24/2025 | 06:34:05 | 70.10, 78.04 | 49.19 | 05/24/2025 | 06:33:09 | 70.11, 77.96 | 49.20 | 3.08 | 56 |
| 6 | 05/26/2025 | 21:09:37 | 70.34,-141.19 | 48.98 | 05/26/2025 | 21:10:39 | 70.34,-141.11 | 48.97 | 2.94 | 62 |
| 7 | 05/26/2025 | 22:00:19 | -70.21, 26.32 | 131.16 | 05/26/2025 | 22:00:09 | -70.22, 26.36 | 131.15 | 1.87 | 10 |
| 8 | 05/26/2025 | 22:50:54 | 69.65,-165.52 | 48.26 | 05/26/2025 | 22:49:44 | 69.68,-166.76 | 48.32 | 47.99 | 70 |
| 9 | 05/29/2025 | 13:26:33 | 70.27, -25.30 | 48.48 | 05/29/2025 | 13:27:07 | 70.27, -25.32 | 48.49 | 1.19 | 34 |
| 10 | 05/29/2025 | 14:17:16 | -70.19, 142.13 | 131.60 | 05/29/2025 | 14:16:37 | -70.16, 142.16 | 131.63 | 3.18 | 39 |
| 11 | 06/01/2025 | 04:52:51 | -70.64, -77.45 | 131.50 | 06/01/2025 | 04:54:02 | -70.57, -76.64 | 131.60 | 30.85 | 71 |
| 12 | 06/01/2025 | 05:43:29 | 70.25, 90.49 | 48.09 | 06/01/2025 | 05:43:33 | 70.25, 90.52 | 48.08 | 1.52 | 4 |
| 13 | 06/01/2025 | 06:34:11 | -70.12,-102.00 | 132.05 | 06/01/2025 | 06:33:03 | -70.14,-102.00 | 132.03 | 1.77 | 68 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/20/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 05/20/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9