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: 11/5/2025
| 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 | 07:35:24 | 70.07, 62.52 | 86.05 | 11/06/2025 | 07:35:51 | 70.05, 62.51 | 86.03 | 1.73 | 27 |
| 2 | 11/06/2025 | 08:26:05 | -69.95,-129.98 | 94.07 | 11/06/2025 | 08:25:21 | -69.94,-130.01 | 94.08 | 1.17 | 44 |
| 3 | 11/08/2025 | 23:01:42 | -70.22, 10.72 | 93.03 | 11/08/2025 | 23:02:54 | -70.19, 10.93 | 93.07 | 8.96 | 72 |
| 4 | 11/08/2025 | 23:52:25 | 70.03, 178.32 | 86.79 | 11/08/2025 | 23:52:22 | 70.03, 178.35 | 86.78 | 0.95 | 3 |
| 5 | 11/09/2025 | 00:43:05 | -69.90, -14.17 | 93.33 | 11/09/2025 | 00:41:51 | -69.92, -14.17 | 93.32 | 1.94 | 74 |
| 6 | 11/11/2025 | 15:18:40 | -70.08, 126.69 | 92.43 | 11/11/2025 | 15:19:25 | -70.09, 126.66 | 92.42 | 1.16 | 45 |
| 7 | 11/11/2025 | 16:09:25 | 70.00, -65.88 | 87.50 | 11/11/2025 | 16:08:52 | 69.98, -65.85 | 87.48 | 2.78 | 33 |
| 8 | 11/14/2025 | 06:45:09 | 70.66, 74.20 | 88.86 | 11/14/2025 | 06:46:18 | 70.55, 75.59 | 88.75 | 52.74 | 69 |
| 9 | 11/14/2025 | 07:35:41 | -70.05,-117.52 | 91.75 | 11/14/2025 | 07:35:55 | -70.07,-117.49 | 91.73 | 2.18 | 14 |
| 10 | 11/14/2025 | 08:26:25 | 69.92, 49.98 | 88.14 | 11/14/2025 | 08:25:22 | 69.95, 50.00 | 88.17 | 3.46 | 63 |
| 11 | 11/16/2025 | 23:02:00 | 70.12,-169.19 | 88.99 | 11/16/2025 | 23:02:55 | 70.12,-169.17 | 88.99 | 1.12 | 55 |
| 12 | 11/16/2025 | 23:52:42 | -70.03, -1.73 | 91.10 | 11/16/2025 | 23:52:25 | -70.02, -1.67 | 91.11 | 2.38 | 17 |
| 13 | 11/17/2025 | 00:43:12 | 69.16, 166.84 | 88.05 | 11/17/2025 | 00:42:04 | 69.24, 164.91 | 88.12 | 76.54 | 68 |
| 14 | 11/19/2025 | 15:19:00 | 70.06, -53.35 | 89.56 | 11/19/2025 | 15:19:25 | 70.04, -53.39 | 89.55 | 2.17 | 25 |
| 15 | 11/19/2025 | 16:09:41 | -69.96, 114.12 | 90.54 | 11/19/2025 | 16:08:54 | -69.95, 114.11 | 90.55 | 1.33 | 47 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/5/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/05/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9