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: 10/23/2025
| 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 | 10/23/2025 | 04:04:19 | 71.02, 114.59 | 82.39 | 10/23/2025 | 04:05:27 | 70.89, 116.29 | 82.27 | 63.27 | 68 |
| 2 | 10/23/2025 | 04:54:50 | -70.33, -76.98 | 98.29 | 10/23/2025 | 04:55:05 | -70.34, -76.91 | 98.29 | 2.63 | 15 |
| 3 | 10/23/2025 | 05:45:33 | 70.18, 90.57 | 81.57 | 10/23/2025 | 05:44:33 | 70.18, 90.51 | 81.57 | 2.47 | 60 |
| 4 | 10/25/2025 | 20:21:04 | 70.36,-128.56 | 82.66 | 10/25/2025 | 20:22:04 | 70.35,-128.64 | 82.64 | 3.03 | 60 |
| 5 | 10/25/2025 | 21:11:47 | -70.31, 38.84 | 97.39 | 10/25/2025 | 21:11:33 | -70.29, 38.91 | 97.41 | 3.16 | 14 |
| 6 | 10/25/2025 | 22:02:19 | 69.57,-152.74 | 81.89 | 10/25/2025 | 22:01:10 | 69.63,-154.37 | 81.95 | 63.67 | 69 |
| 7 | 10/28/2025 | 12:38:01 | 70.34, -12.76 | 83.54 | 10/28/2025 | 12:38:31 | 70.32, -12.79 | 83.52 | 2.72 | 30 |
| 8 | 10/28/2025 | 13:28:43 | -70.23, 154.72 | 96.56 | 10/28/2025 | 13:28:01 | -70.21, 154.68 | 96.59 | 3.15 | 42 |
| 9 | 10/31/2025 | 04:04:16 | -70.59, -64.70 | 95.35 | 10/31/2025 | 04:05:27 | -70.53, -64.23 | 95.41 | 18.49 | 71 |
| 10 | 10/31/2025 | 04:54:56 | 70.28, 103.11 | 84.36 | 10/31/2025 | 04:54:56 | 70.31, 103.09 | 84.38 | 3.17 | 0 |
| 11 | 10/31/2025 | 05:45:38 | -70.17, -89.41 | 95.74 | 10/31/2025 | 05:44:26 | -70.20, -89.43 | 95.72 | 3.05 | 72 |
| 12 | 11/02/2025 | 20:21:09 | -70.38, 51.41 | 94.70 | 11/02/2025 | 20:21:55 | -70.37, 51.44 | 94.71 | 1.31 | 46 |
| 13 | 11/02/2025 | 21:11:53 | 70.28,-141.12 | 85.21 | 11/02/2025 | 21:11:22 | 70.26,-141.09 | 85.19 | 2.66 | 31 |
| 14 | 11/05/2025 | 11:47:33 | 70.97, -1.09 | 86.70 | 11/05/2025 | 11:48:42 | 70.89, 0.48 | 86.63 | 57.73 | 69 |
| 15 | 11/05/2025 | 12:38:05 | -70.34, 167.25 | 93.92 | 11/05/2025 | 12:38:20 | -70.35, 167.30 | 93.92 | 1.90 | 15 |
| 16 | 11/05/2025 | 13:28:49 | 70.24, -25.28 | 85.99 | 11/05/2025 | 13:27:47 | 70.23, -25.23 | 85.98 | 2.09 | 62 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/23/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 10/23/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9