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: 8/29/2025
| 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 | 08/31/2025 | 14:28:55 | -70.09, 139.10 | 118.38 | 08/31/2025 | 14:29:42 | -70.11, 139.09 | 118.37 | 2.23 | 47 |
| 2 | 08/31/2025 | 15:19:39 | 69.99, -53.45 | 61.53 | 08/31/2025 | 15:19:10 | 69.96, -53.47 | 61.51 | 3.42 | 29 |
| 3 | 09/03/2025 | 05:55:24 | 71.07, 85.97 | 63.61 | 09/03/2025 | 05:56:29 | 70.96, 88.62 | 63.43 | 96.71 | 65 |
| 4 | 09/03/2025 | 06:45:49 | -70.07,-105.10 | 117.43 | 09/03/2025 | 06:46:13 | -70.08,-105.07 | 117.43 | 1.50 | 24 |
| 5 | 09/03/2025 | 07:36:32 | 69.92, 62.43 | 62.43 | 09/03/2025 | 07:35:41 | 69.93, 62.37 | 62.45 | 2.62 | 51 |
| 6 | 09/05/2025 | 22:12:02 | 70.22,-156.88 | 63.71 | 09/05/2025 | 22:13:13 | 70.20,-156.65 | 63.67 | 9.09 | 71 |
| 7 | 09/05/2025 | 23:02:41 | -70.01, 10.76 | 116.51 | 09/05/2025 | 23:02:43 | -70.02, 10.73 | 116.50 | 1.78 | 2 |
| 8 | 09/05/2025 | 23:53:24 | 69.86, 178.30 | 63.36 | 09/05/2025 | 23:52:11 | 69.87, 178.16 | 63.38 | 5.25 | 73 |
| 9 | 09/08/2025 | 14:28:53 | 70.12, -40.94 | 64.60 | 09/08/2025 | 14:29:43 | 70.11, -40.89 | 64.58 | 1.95 | 50 |
| 10 | 09/08/2025 | 15:19:35 | -70.01, 126.54 | 115.51 | 09/08/2025 | 15:19:13 | -69.99, 126.57 | 115.53 | 2.36 | 22 |
| 11 | 09/08/2025 | 16:10:02 | 69.01, -64.70 | 63.48 | 09/08/2025 | 16:08:55 | 69.07, -67.03 | 63.59 | 92.88 | 67 |
| 12 | 09/11/2025 | 06:45:46 | 70.07, 74.91 | 65.56 | 09/11/2025 | 06:46:13 | 70.05, 74.91 | 65.54 | 2.02 | 27 |
| 13 | 09/11/2025 | 07:36:28 | -69.97,-117.62 | 114.54 | 09/11/2025 | 07:35:43 | -69.94,-117.62 | 114.57 | 3.33 | 45 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/29/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/29/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9