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: 11/13/2025
| 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 | 11/14/2025 | 06:45:07 | 70.59, 74.32 | 88.79 | 11/14/2025 | 06:46:17 | 70.49, 75.50 | 88.69 | 45.04 | 70 |
| 2 | 11/14/2025 | 07:35:40 | -70.03,-117.49 | 91.76 | 11/14/2025 | 07:35:53 | -70.05,-117.51 | 91.75 | 1.55 | 13 |
| 3 | 11/14/2025 | 08:26:25 | 69.95, 49.94 | 88.17 | 11/14/2025 | 08:25:20 | 69.94, 49.99 | 88.15 | 2.26 | 65 |
| 4 | 11/16/2025 | 23:01:59 | 70.12,-169.19 | 88.99 | 11/16/2025 | 23:02:51 | 70.13,-169.14 | 89.00 | 2.29 | 52 |
| 5 | 11/16/2025 | 23:52:40 | -69.98, -1.66 | 91.15 | 11/16/2025 | 23:52:22 | -69.96, -1.74 | 91.16 | 3.36 | 18 |
| 6 | 11/17/2025 | 00:43:09 | 69.05, 166.99 | 87.94 | 11/17/2025 | 00:42:02 | 69.14, 164.79 | 88.02 | 87.71 | 67 |
| 7 | 11/19/2025 | 14:28:31 | -71.04, 137.76 | 89.46 | 11/19/2025 | 14:29:37 | -70.97, 140.37 | 89.53 | 94.74 | 66 |
| 8 | 11/19/2025 | 15:18:58 | 70.03, -53.31 | 89.54 | 11/19/2025 | 15:19:19 | 70.04, -53.37 | 89.55 | 2.37 | 21 |
| 9 | 11/19/2025 | 16:09:40 | -69.94, 114.15 | 90.55 | 11/19/2025 | 16:08:49 | -69.94, 114.11 | 90.56 | 1.38 | 51 |
| 10 | 11/22/2025 | 06:45:14 | -70.13,-105.01 | 89.79 | 11/22/2025 | 06:46:18 | -70.13,-105.00 | 89.79 | 0.68 | 64 |
| 11 | 11/22/2025 | 07:35:58 | 70.02, 62.46 | 90.12 | 11/22/2025 | 07:35:45 | 70.01, 62.49 | 90.11 | 0.98 | 13 |
| 12 | 11/22/2025 | 08:26:32 | -69.50,-129.44 | 90.41 | 11/22/2025 | 08:25:21 | -69.58,-130.48 | 90.33 | 41.51 | 71 |
| 13 | 11/24/2025 | 23:02:12 | -70.07, 10.83 | 89.30 | 11/24/2025 | 23:02:43 | -70.05, 10.79 | 89.32 | 3.17 | 31 |
| 14 | 11/24/2025 | 23:52:56 | 69.97, 178.30 | 90.61 | 11/24/2025 | 23:52:09 | 69.98, 178.34 | 90.63 | 2.58 | 47 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/13/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/13/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9