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: 10/26/2025
| 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 | 10/26/2025 | 15:18:44 | -70.06, 126.68 | 97.38 | 10/26/2025 | 15:19:20 | -70.05, 126.64 | 97.39 | 1.97 | 36 |
| 2 | 10/26/2025 | 16:09:29 | 69.97, -65.87 | 82.55 | 10/26/2025 | 16:08:47 | 69.95, -65.86 | 82.52 | 2.55 | 42 |
| 3 | 10/29/2025 | 06:45:01 | 70.57, 74.36 | 84.02 | 10/29/2025 | 06:46:11 | 70.46, 75.49 | 83.92 | 43.41 | 70 |
| 4 | 10/29/2025 | 07:35:34 | -70.03,-117.48 | 96.51 | 10/29/2025 | 07:35:47 | -70.02,-117.51 | 96.52 | 1.71 | 13 |
| 5 | 10/29/2025 | 08:26:18 | 69.89, 50.04 | 83.37 | 10/29/2025 | 08:25:14 | 69.92, 49.98 | 83.38 | 3.21 | 64 |
| 6 | 10/31/2025 | 23:01:42 | 70.13,-169.15 | 84.45 | 10/31/2025 | 23:02:42 | 70.13,-169.11 | 84.44 | 1.88 | 60 |
| 7 | 10/31/2025 | 23:52:23 | -70.01, -1.65 | 95.66 | 10/31/2025 | 23:52:12 | -70.02, -1.63 | 95.66 | 1.10 | 11 |
| 8 | 11/01/2025 | 00:42:57 | 69.35, 166.63 | 83.69 | 11/01/2025 | 00:41:48 | 69.41, 165.18 | 83.74 | 57.16 | 69 |
| 9 | 11/03/2025 | 15:18:31 | 70.07, -53.27 | 85.23 | 11/03/2025 | 15:19:08 | 70.09, -53.27 | 85.25 | 1.59 | 37 |
| 10 | 11/03/2025 | 16:09:13 | -70.00, 114.16 | 94.83 | 11/03/2025 | 16:08:38 | -69.98, 114.22 | 94.85 | 3.17 | 35 |
| 11 | 11/06/2025 | 06:44:48 | -70.77,-105.89 | 93.27 | 11/06/2025 | 06:45:57 | -70.68,-104.14 | 93.35 | 64.96 | 69 |
| 12 | 11/06/2025 | 07:35:20 | 70.02, 62.60 | 86.00 | 11/06/2025 | 07:35:34 | 70.02, 62.53 | 85.99 | 2.77 | 14 |
| 13 | 11/06/2025 | 08:26:02 | -69.94,-129.96 | 94.07 | 11/06/2025 | 08:25:03 | -69.97,-129.90 | 94.06 | 3.23 | 59 |
| 14 | 11/08/2025 | 23:01:26 | -70.15, 10.90 | 93.11 | 11/08/2025 | 23:02:31 | -70.14, 10.97 | 93.11 | 2.79 | 65 |
| 15 | 11/08/2025 | 23:52:10 | 70.03, 178.38 | 86.79 | 11/08/2025 | 23:51:58 | 70.02, 178.45 | 86.78 | 2.77 | 12 |
| 16 | 11/09/2025 | 00:42:45 | -69.58, -13.62 | 93.66 | 11/09/2025 | 00:41:33 | -69.65, -14.44 | 93.60 | 32.54 | 72 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/26/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 10/26/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9