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: 10/27/2025
| 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 | 10/29/2025 | 06:45:01 | 70.58, 74.34 | 84.03 | 10/29/2025 | 06:46:11 | 70.45, 75.47 | 83.90 | 44.25 | 70 |
| 2 | 10/29/2025 | 07:35:34 | -70.05,-117.50 | 96.50 | 10/29/2025 | 07:35:46 | -70.06,-117.46 | 96.49 | 2.17 | 12 |
| 3 | 10/29/2025 | 08:26:18 | 69.91, 50.02 | 83.38 | 10/29/2025 | 08:25:14 | 69.90, 49.96 | 83.37 | 2.48 | 64 |
| 4 | 10/31/2025 | 23:01:42 | 70.09,-169.09 | 84.41 | 10/31/2025 | 23:02:43 | 70.11,-169.13 | 84.42 | 2.32 | 61 |
| 5 | 10/31/2025 | 23:52:23 | -69.97, -1.59 | 95.70 | 10/31/2025 | 23:52:13 | -70.00, -1.66 | 95.68 | 3.41 | 10 |
| 6 | 11/01/2025 | 00:42:58 | 69.36, 166.61 | 83.70 | 11/01/2025 | 00:41:48 | 69.44, 165.23 | 83.78 | 54.95 | 70 |
| 7 | 11/03/2025 | 15:18:31 | 70.08, -53.29 | 85.25 | 11/03/2025 | 15:19:08 | 70.06, -53.30 | 85.22 | 2.87 | 37 |
| 8 | 11/03/2025 | 16:09:12 | -69.96, 114.22 | 94.87 | 11/03/2025 | 16:08:38 | -69.95, 114.18 | 94.88 | 1.91 | 34 |
| 9 | 11/06/2025 | 06:44:48 | -70.78,-105.91 | 93.25 | 11/06/2025 | 06:45:56 | -70.70,-104.11 | 93.34 | 66.71 | 68 |
| 10 | 11/06/2025 | 07:35:20 | 70.04, 62.58 | 86.01 | 11/06/2025 | 07:35:33 | 70.04, 62.56 | 86.01 | 0.82 | 13 |
| 11 | 11/06/2025 | 08:26:01 | -69.91,-129.90 | 94.11 | 11/06/2025 | 08:25:03 | -69.93,-129.95 | 94.09 | 3.29 | 58 |
| 12 | 11/08/2025 | 23:01:25 | -70.11, 10.96 | 93.15 | 11/08/2025 | 23:02:31 | -70.10, 10.91 | 93.16 | 2.39 | 66 |
| 13 | 11/08/2025 | 23:52:09 | 70.00, 178.44 | 86.75 | 11/08/2025 | 23:51:58 | 69.98, 178.39 | 86.73 | 2.83 | 11 |
| 14 | 11/09/2025 | 00:42:44 | -69.54, -13.57 | 93.69 | 11/09/2025 | 00:41:33 | -69.60, -14.50 | 93.64 | 36.91 | 71 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/27/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 10/27/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9