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: 8/27/2025
| 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 | 08/28/2025 | 04:53:32 | 70.97, 102.17 | 61.32 | 08/28/2025 | 04:54:40 | 70.90, 103.96 | 61.19 | 65.61 | 68 |
| 2 | 08/28/2025 | 05:44:02 | -70.26, -89.36 | 119.42 | 08/28/2025 | 05:44:20 | -70.23, -89.40 | 119.45 | 3.13 | 18 |
| 3 | 08/28/2025 | 06:34:46 | 70.12, 78.16 | 60.46 | 08/28/2025 | 06:33:47 | 70.13, 78.11 | 60.48 | 2.33 | 59 |
| 4 | 08/30/2025 | 21:10:20 | 70.32,-141.03 | 61.59 | 08/30/2025 | 21:11:18 | 70.33,-141.01 | 61.59 | 0.61 | 58 |
| 5 | 08/30/2025 | 22:01:02 | -70.23, 26.43 | 118.49 | 08/30/2025 | 22:00:48 | -70.21, 26.45 | 118.52 | 2.96 | 14 |
| 6 | 08/30/2025 | 22:51:34 | 69.47,-165.12 | 60.74 | 08/30/2025 | 22:50:25 | 69.56,-166.81 | 60.87 | 66.59 | 69 |
| 7 | 09/02/2025 | 13:27:20 | 70.26, -25.17 | 62.50 | 09/02/2025 | 13:27:47 | 70.28, -25.19 | 62.51 | 1.96 | 27 |
| 8 | 09/02/2025 | 14:18:02 | -70.17, 142.29 | 117.59 | 09/02/2025 | 14:17:17 | -70.16, 142.28 | 117.59 | 0.53 | 45 |
| 9 | 09/05/2025 | 04:53:37 | -70.37, -76.90 | 116.42 | 09/05/2025 | 04:54:48 | -70.37, -76.82 | 116.44 | 3.24 | 71 |
| 10 | 09/05/2025 | 05:44:20 | 70.21, 90.66 | 63.42 | 09/05/2025 | 05:44:16 | 70.21, 90.60 | 63.42 | 2.61 | 4 |
| 11 | 09/05/2025 | 06:35:00 | -70.00,-101.70 | 116.78 | 09/05/2025 | 06:33:47 | -70.04,-102.01 | 116.73 | 12.50 | 73 |
| 12 | 09/07/2025 | 21:10:36 | -70.27, 39.02 | 115.54 | 09/07/2025 | 21:11:17 | -70.28, 38.95 | 115.53 | 3.27 | 41 |
| 13 | 09/07/2025 | 22:01:20 | 70.16,-153.51 | 64.37 | 09/07/2025 | 22:00:44 | 70.17,-153.57 | 64.39 | 2.65 | 36 |
| 14 | 09/10/2025 | 12:36:59 | 70.65, -13.15 | 65.85 | 09/10/2025 | 12:38:10 | 70.55, -12.40 | 65.74 | 29.82 | 71 |
| 15 | 09/10/2025 | 13:27:36 | -70.27, 154.77 | 114.52 | 09/10/2025 | 13:27:43 | -70.28, 154.84 | 114.52 | 2.81 | 7 |
| 16 | 09/10/2025 | 14:18:19 | 70.12, -37.69 | 65.34 | 09/10/2025 | 14:17:11 | 70.11, -37.76 | 65.34 | 2.75 | 68 |
Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/27/2025
Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/27/2025 in txt file.
Historial Predications of SNOs between NPP and LANDSAT-9