Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 11/4/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 11/06/2025 | 07:35:21 | 70.08, 62.51 | 86.06 | 11/06/2025 | 07:35:50 | 70.09, 62.56 | 86.06 | 1.83 | 29 |
| 2 | 11/06/2025 | 08:26:02 | -69.96,-129.99 | 94.06 | 11/06/2025 | 08:25:20 | -69.98,-129.96 | 94.04 | 2.05 | 42 |
| 3 | 11/08/2025 | 23:01:37 | -70.74, 9.96 | 92.52 | 11/08/2025 | 23:02:46 | -70.61, 11.55 | 92.64 | 60.18 | 69 |
| 4 | 11/08/2025 | 23:52:10 | 70.04, 178.38 | 86.79 | 11/08/2025 | 23:52:21 | 70.06, 178.40 | 86.82 | 3.28 | 11 |
| 5 | 11/09/2025 | 00:42:52 | -69.96, -14.19 | 93.28 | 11/09/2025 | 00:41:51 | -69.96, -14.11 | 93.28 | 2.99 | 61 |
| 6 | 11/11/2025 | 15:18:15 | -70.11, 126.75 | 92.40 | 11/11/2025 | 15:19:25 | -70.13, 126.72 | 92.38 | 2.03 | 70 |
| 7 | 11/11/2025 | 16:08:59 | 69.99, -65.76 | 87.50 | 11/11/2025 | 16:08:52 | 70.02, -65.79 | 87.52 | 2.62 | 7 |
| 8 | 11/11/2025 | 16:59:37 | -69.70, 101.99 | 92.79 | 11/11/2025 | 16:58:24 | -69.81, 101.55 | 92.69 | 20.44 | 73 |
| 9 | 11/14/2025 | 07:35:04 | -70.12,-117.47 | 91.67 | 11/14/2025 | 07:35:54 | -70.12,-117.42 | 91.68 | 2.32 | 50 |
| 10 | 11/14/2025 | 08:25:48 | 70.01, 50.00 | 88.23 | 11/14/2025 | 08:25:21 | 70.00, 50.07 | 88.21 | 2.77 | 27 |
| 11 | 11/14/2025 | 09:16:13 | -69.03,-141.25 | 92.75 | 11/14/2025 | 09:15:06 | -69.07,-143.55 | 92.71 | 91.75 | 67 |
| 12 | 11/16/2025 | 23:51:53 | -70.09, -1.62 | 91.04 | 11/16/2025 | 23:52:24 | -70.08, -1.59 | 91.05 | 1.80 | 31 |
| 13 | 11/17/2025 | 00:42:36 | 69.93, 165.92 | 88.82 | 11/17/2025 | 00:41:51 | 69.96, 165.89 | 88.85 | 3.21 | 45 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/4/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/04/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9