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: 8/4/2025
| 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 | 08/04/2025 | 04:53:20 | -71.16, -78.19 | 125.97 | 08/04/2025 | 04:54:27 | -71.07, -75.76 | 126.16 | 87.92 | 67 |
| 2 | 08/04/2025 | 05:43:49 | 70.24, 90.64 | 53.06 | 08/04/2025 | 05:44:07 | 70.26, 90.66 | 53.08 | 3.03 | 18 |
| 3 | 08/04/2025 | 06:34:30 | -70.13,-101.86 | 127.05 | 08/04/2025 | 06:33:37 | -70.15,-101.86 | 127.02 | 2.68 | 53 |
| 4 | 08/06/2025 | 21:10:00 | -70.39, 38.88 | 126.07 | 08/06/2025 | 21:11:12 | -70.35, 39.02 | 126.13 | 6.83 | 72 |
| 5 | 08/06/2025 | 22:00:43 | 70.19,-153.51 | 53.74 | 08/06/2025 | 22:00:40 | 70.19,-153.57 | 53.74 | 2.30 | 3 |
| 6 | 08/06/2025 | 22:51:23 | -70.03, 14.07 | 126.43 | 08/06/2025 | 22:50:10 | -70.08, 13.91 | 126.36 | 8.57 | 73 |
| 7 | 08/09/2025 | 13:26:52 | -70.29, 154.81 | 125.41 | 08/09/2025 | 13:27:43 | -70.32, 154.85 | 125.40 | 2.82 | 51 |
| 8 | 08/09/2025 | 14:17:36 | 70.16, -37.67 | 54.46 | 08/09/2025 | 14:17:11 | 70.16, -37.74 | 54.47 | 2.82 | 25 |
| 9 | 08/09/2025 | 15:08:02 | -69.24, 131.00 | 126.48 | 08/09/2025 | 15:06:55 | -69.28, 128.69 | 126.36 | 91.12 | 67 |
| 10 | 08/12/2025 | 05:43:46 | -70.26, -89.35 | 124.66 | 08/12/2025 | 05:44:15 | -70.27, -89.35 | 124.65 | 1.41 | 29 |
| 11 | 08/12/2025 | 06:34:31 | 70.18, 78.08 | 55.27 | 08/12/2025 | 06:33:42 | 70.16, 78.14 | 55.26 | 2.72 | 49 |
| 12 | 08/14/2025 | 21:10:03 | 70.56,-141.37 | 56.47 | 08/14/2025 | 21:11:14 | 70.47,-140.81 | 56.35 | 23.43 | 71 |
| 13 | 08/14/2025 | 22:00:40 | -70.23, 26.48 | 123.87 | 08/14/2025 | 22:00:47 | -70.21, 26.44 | 123.90 | 2.69 | 7 |
| 14 | 08/14/2025 | 22:51:24 | 70.10,-166.01 | 56.01 | 08/14/2025 | 22:50:14 | 70.09,-166.08 | 56.01 | 2.45 | 70 |
| 15 | 08/17/2025 | 13:26:52 | 70.28, -25.14 | 57.02 | 08/17/2025 | 13:27:48 | 70.28, -25.21 | 57.01 | 2.59 | 56 |
| 16 | 08/17/2025 | 14:17:34 | -70.20, 142.31 | 123.06 | 08/17/2025 | 14:17:18 | -70.18, 142.28 | 123.08 | 2.20 | 16 |
| 17 | 08/17/2025 | 15:08:05 | 69.39, -49.17 | 56.11 | 08/17/2025 | 15:06:57 | 69.41, -51.15 | 56.20 | 77.30 | 68 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/4/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/04/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9