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: 7/19/2025
| 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 | 07/19/2025 | 04:53:16 | -70.94, -77.86 | 129.83 | 07/19/2025 | 04:54:25 | -70.81, -76.16 | 130.04 | 63.71 | 69 |
| 2 | 07/19/2025 | 05:43:49 | 70.23, 90.60 | 49.42 | 07/19/2025 | 05:44:01 | 70.22, 90.60 | 49.41 | 1.11 | 12 |
| 3 | 07/19/2025 | 06:34:30 | -70.11,-101.90 | 130.70 | 07/19/2025 | 06:33:31 | -70.11,-101.92 | 130.69 | 1.14 | 59 |
| 4 | 07/21/2025 | 21:09:59 | -70.29, 38.98 | 130.01 | 07/21/2025 | 21:11:05 | -70.30, 38.95 | 130.02 | 1.31 | 66 |
| 5 | 07/21/2025 | 22:00:43 | 70.20,-153.58 | 49.91 | 07/21/2025 | 22:00:31 | 70.19,-153.56 | 49.89 | 1.50 | 12 |
| 6 | 07/21/2025 | 22:51:18 | -69.77, 14.40 | 130.54 | 07/21/2025 | 22:50:06 | -69.81, 13.54 | 130.46 | 33.58 | 72 |
| 7 | 07/24/2025 | 13:26:53 | -70.27, 154.79 | 129.48 | 07/24/2025 | 13:27:35 | -70.26, 154.77 | 129.50 | 1.46 | 42 |
| 8 | 07/24/2025 | 14:17:37 | 70.13, -37.68 | 50.38 | 07/24/2025 | 14:17:02 | 70.15, -37.74 | 50.41 | 2.99 | 35 |
| 9 | 07/27/2025 | 04:53:18 | 70.95, 102.15 | 51.82 | 07/27/2025 | 04:54:26 | 70.85, 103.91 | 51.65 | 64.90 | 68 |
| 10 | 07/27/2025 | 05:43:48 | -70.25, -89.40 | 128.91 | 07/27/2025 | 05:44:05 | -70.26, -89.35 | 128.91 | 2.21 | 17 |
| 11 | 07/27/2025 | 06:34:32 | 70.11, 78.12 | 50.96 | 07/27/2025 | 06:33:33 | 70.09, 78.06 | 50.94 | 3.54 | 59 |
| 12 | 07/29/2025 | 21:10:01 | 70.31,-141.03 | 51.77 | 07/29/2025 | 21:11:06 | 70.29,-141.06 | 51.74 | 2.51 | 65 |
| 13 | 07/29/2025 | 22:00:42 | -70.18, 26.48 | 128.35 | 07/29/2025 | 22:00:36 | -70.19, 26.44 | 128.35 | 1.79 | 6 |
| 14 | 07/29/2025 | 22:51:19 | 69.68,-165.45 | 51.13 | 07/29/2025 | 22:50:09 | 69.74,-166.55 | 51.24 | 43.11 | 70 |
| 15 | 08/01/2025 | 13:26:55 | 70.25, -25.16 | 52.37 | 08/01/2025 | 13:27:36 | 70.25, -25.22 | 52.37 | 2.44 | 41 |
| 16 | 08/01/2025 | 14:17:36 | -70.17, 142.27 | 127.70 | 08/01/2025 | 14:17:05 | -70.16, 142.28 | 127.71 | 1.78 | 31 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/19/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 07/19/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9