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 | 06:45:08 | 70.61, 74.28 | 88.81 | 11/14/2025 | 06:46:18 | 70.47, 75.47 | 88.67 | 46.53 | 70 |
| 2 | 11/14/2025 | 07:35:41 | -70.06,-117.53 | 91.74 | 11/14/2025 | 07:35:54 | -70.03,-117.54 | 91.77 | 3.30 | 13 |
| 3 | 11/14/2025 | 08:26:25 | 69.92, 49.98 | 88.14 | 11/14/2025 | 08:25:21 | 69.92, 49.96 | 88.13 | 1.00 | 64 |
| 4 | 11/16/2025 | 23:01:58 | 70.09,-169.15 | 88.96 | 11/16/2025 | 23:02:51 | 70.11,-169.17 | 88.98 | 2.14 | 53 |
| 5 | 11/16/2025 | 23:52:40 | -70.00, -1.70 | 91.12 | 11/16/2025 | 23:52:21 | -70.00, -1.69 | 91.13 | 0.73 | 19 |
| 6 | 11/17/2025 | 00:43:09 | 69.08, 166.95 | 87.97 | 11/17/2025 | 00:42:02 | 69.12, 164.76 | 88.00 | 87.05 | 67 |
| 7 | 11/19/2025 | 14:28:31 | -71.07, 137.71 | 89.43 | 11/19/2025 | 14:29:37 | -70.95, 140.34 | 89.55 | 95.91 | 66 |
| 8 | 11/19/2025 | 15:18:58 | 70.06, -53.35 | 89.57 | 11/19/2025 | 15:19:18 | 70.08, -53.32 | 89.58 | 2.16 | 20 |
| 9 | 11/19/2025 | 16:09:40 | -69.97, 114.10 | 90.52 | 11/19/2025 | 16:08:48 | -69.97, 114.16 | 90.52 | 2.22 | 52 |
| 10 | 11/22/2025 | 06:45:13 | -70.11,-104.99 | 89.80 | 11/22/2025 | 06:46:18 | -70.11,-105.03 | 89.81 | 1.62 | 65 |
| 11 | 11/22/2025 | 07:35:57 | 70.00, 62.49 | 90.10 | 11/22/2025 | 07:35:45 | 69.99, 62.46 | 90.09 | 1.64 | 12 |
| 12 | 11/22/2025 | 08:26:32 | -69.53,-129.49 | 90.37 | 11/22/2025 | 08:25:21 | -69.56,-130.51 | 90.35 | 39.74 | 71 |
| 13 | 11/24/2025 | 23:02:12 | -70.06, 10.85 | 89.31 | 11/24/2025 | 23:02:43 | -70.08, 10.84 | 89.29 | 2.43 | 31 |
| 14 | 11/24/2025 | 23:52:56 | 69.96, 178.32 | 90.60 | 11/24/2025 | 23:52:10 | 69.96, 178.31 | 90.60 | 0.98 | 46 |
| 15 | 11/27/2025 | 14:28:28 | 70.14, -40.83 | 91.27 | 11/27/2025 | 14:29:36 | 70.16, -40.78 | 91.29 | 2.81 | 68 |
| 16 | 11/27/2025 | 15:19:10 | -70.03, 126.66 | 88.84 | 11/27/2025 | 15:19:07 | -70.00, 126.62 | 88.87 | 3.16 | 3 |
| 17 | 11/27/2025 | 16:09:49 | 69.66, -65.49 | 90.80 | 11/27/2025 | 16:08:37 | 69.71, -66.13 | 90.86 | 25.37 | 72 |
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