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: 10/13/2025
| 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 | 10/15/2025 | 04:54:42 | 70.29, 103.09 | 78.78 | 10/15/2025 | 04:55:06 | 70.31, 103.04 | 78.81 | 3.24 | 24 |
| 2 | 10/15/2025 | 05:45:25 | -70.22, -89.49 | 101.27 | 10/15/2025 | 05:44:36 | -70.20, -89.49 | 101.30 | 2.91 | 49 |
| 3 | 10/17/2025 | 20:20:57 | -70.43, 51.33 | 100.11 | 10/17/2025 | 20:22:08 | -70.43, 51.45 | 100.11 | 4.44 | 71 |
| 4 | 10/17/2025 | 21:11:40 | 70.28,-141.13 | 79.76 | 10/17/2025 | 21:11:36 | 70.27,-141.14 | 79.74 | 1.72 | 4 |
| 5 | 10/17/2025 | 22:02:20 | -70.06, 26.53 | 100.45 | 10/17/2025 | 22:01:07 | -70.10, 26.26 | 100.41 | 11.28 | 73 |
| 6 | 10/20/2025 | 12:37:54 | -70.38, 167.18 | 99.19 | 10/20/2025 | 12:38:38 | -70.36, 167.23 | 99.21 | 2.95 | 44 |
| 7 | 10/20/2025 | 13:28:37 | 70.23, -25.28 | 80.68 | 10/20/2025 | 13:28:05 | 70.25, -25.28 | 80.69 | 1.69 | 32 |
| 8 | 10/23/2025 | 04:04:19 | 71.03, 114.56 | 82.40 | 10/23/2025 | 04:05:27 | 70.91, 116.32 | 82.29 | 65.15 | 68 |
| 9 | 10/23/2025 | 04:54:50 | -70.34, -76.99 | 98.28 | 10/23/2025 | 04:55:06 | -70.32, -76.94 | 98.31 | 3.16 | 16 |
| 10 | 10/23/2025 | 05:45:33 | 70.20, 90.55 | 81.59 | 10/23/2025 | 05:44:33 | 70.20, 90.54 | 81.59 | 0.82 | 60 |
| 11 | 10/25/2025 | 20:21:04 | 70.38,-128.59 | 82.67 | 10/25/2025 | 20:22:04 | 70.40,-128.57 | 82.69 | 2.60 | 60 |
| 12 | 10/25/2025 | 21:11:46 | -70.26, 38.91 | 97.44 | 10/25/2025 | 21:11:35 | -70.24, 38.84 | 97.46 | 3.33 | 11 |
| 13 | 10/25/2025 | 22:02:20 | 69.64,-152.84 | 81.96 | 10/25/2025 | 22:01:10 | 69.68,-154.30 | 82.00 | 56.84 | 70 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/13/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 10/13/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9