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: 10/27/2025
| 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 | 70.59, 74.33 | 84.04 | 10/29/2025 | 06:46:11 | 70.44, 75.46 | 83.89 | 44.77 | 70 |
| 2 | 10/29/2025 | 07:35:34 | -70.06,-117.51 | 96.49 | 10/29/2025 | 07:35:46 | -70.05,-117.47 | 96.49 | 1.63 | 12 |
| 3 | 10/29/2025 | 08:26:18 | 69.91, 50.01 | 83.38 | 10/29/2025 | 08:25:14 | 69.89, 49.95 | 83.36 | 3.16 | 64 |
| 4 | 10/31/2025 | 23:01:42 | 70.10,-169.10 | 84.42 | 10/31/2025 | 23:02:43 | 70.10,-169.14 | 84.42 | 1.58 | 61 |
| 5 | 10/31/2025 | 23:52:23 | -69.98, -1.60 | 95.69 | 10/31/2025 | 23:52:13 | -69.99, -1.66 | 95.69 | 2.53 | 10 |
| 6 | 11/01/2025 | 00:42:58 | 69.37, 166.61 | 83.71 | 11/01/2025 | 00:41:48 | 69.44, 165.23 | 83.78 | 54.62 | 70 |
| 7 | 11/03/2025 | 15:18:32 | 70.09, -53.30 | 85.25 | 11/03/2025 | 15:19:09 | 70.06, -53.30 | 85.22 | 3.47 | 37 |
| 8 | 11/03/2025 | 16:09:13 | -69.97, 114.21 | 94.86 | 11/03/2025 | 16:08:39 | -69.95, 114.18 | 94.88 | 2.29 | 34 |
| 9 | 11/06/2025 | 06:44:48 | -70.79,-105.92 | 93.24 | 11/06/2025 | 06:45:56 | -70.70,-104.11 | 93.33 | 67.33 | 68 |
| 10 | 11/06/2025 | 07:35:20 | 70.04, 62.58 | 86.02 | 11/06/2025 | 07:35:33 | 70.04, 62.57 | 86.01 | 0.27 | 13 |
| 11 | 11/06/2025 | 08:26:01 | -69.91,-129.91 | 94.11 | 11/06/2025 | 08:25:03 | -69.93,-129.95 | 94.09 | 2.72 | 58 |
| 12 | 11/08/2025 | 23:01:25 | -70.12, 10.95 | 93.14 | 11/08/2025 | 23:02:31 | -70.11, 10.92 | 93.15 | 1.50 | 66 |
| 13 | 11/08/2025 | 23:52:09 | 70.00, 178.43 | 86.76 | 11/08/2025 | 23:51:58 | 69.99, 178.40 | 86.74 | 1.84 | 11 |
| 14 | 11/09/2025 | 00:42:44 | -69.55, -13.58 | 93.69 | 11/09/2025 | 00:41:33 | -69.61, -14.49 | 93.63 | 36.11 | 71 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/27/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 10/27/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9