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: 10/28/2025
| 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, 74.35 | 84.03 | 10/29/2025 | 06:46:11 | 70.46, 75.48 | 83.91 | 43.93 | 70 |
| 2 | 10/29/2025 | 07:35:34 | -70.05,-117.50 | 96.50 | 10/29/2025 | 07:35:46 | -70.07,-117.45 | 96.48 | 2.89 | 12 |
| 3 | 10/29/2025 | 08:26:18 | 69.90, 50.03 | 83.37 | 10/29/2025 | 08:25:14 | 69.91, 49.97 | 83.37 | 2.28 | 64 |
| 4 | 10/31/2025 | 23:01:43 | 70.14,-169.17 | 84.46 | 10/31/2025 | 23:02:43 | 70.11,-169.12 | 84.43 | 3.22 | 60 |
| 5 | 10/31/2025 | 23:52:24 | -70.02, -1.67 | 95.65 | 10/31/2025 | 23:52:13 | -70.00, -1.65 | 95.67 | 2.50 | 11 |
| 6 | 11/01/2025 | 00:42:58 | 69.36, 166.62 | 83.70 | 11/01/2025 | 00:41:49 | 69.40, 165.17 | 83.73 | 57.09 | 69 |
| 7 | 11/03/2025 | 15:18:31 | 70.08, -53.28 | 85.24 | 11/03/2025 | 15:19:08 | 70.07, -53.29 | 85.23 | 1.12 | 37 |
| 8 | 11/03/2025 | 16:09:12 | -69.96, 114.22 | 94.87 | 11/03/2025 | 16:08:38 | -69.96, 114.19 | 94.87 | 1.16 | 34 |
| 9 | 11/06/2025 | 06:44:48 | -70.78,-105.91 | 93.25 | 11/06/2025 | 06:45:57 | -70.66,-104.17 | 93.38 | 65.31 | 69 |
| 10 | 11/06/2025 | 07:35:20 | 70.03, 62.59 | 86.01 | 11/06/2025 | 07:35:33 | 70.05, 62.58 | 86.03 | 2.03 | 13 |
| 11 | 11/06/2025 | 08:26:02 | -69.96,-129.98 | 94.06 | 11/06/2025 | 08:25:03 | -69.94,-129.93 | 94.08 | 2.35 | 59 |
| 12 | 11/08/2025 | 23:01:25 | -70.11, 10.96 | 93.15 | 11/08/2025 | 23:02:31 | -70.12, 10.93 | 93.14 | 1.07 | 66 |
| 13 | 11/08/2025 | 23:52:09 | 69.99, 178.44 | 86.75 | 11/08/2025 | 23:51:58 | 70.00, 178.41 | 86.75 | 1.25 | 11 |
| 14 | 11/09/2025 | 00:42:44 | -69.54, -13.57 | 93.69 | 11/09/2025 | 00:41:33 | -69.62, -14.48 | 93.62 | 36.30 | 71 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/28/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 10/28/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9