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: 7/31/2025
| 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 | 08/02/2025 | 05:55:13 | 70.31, 87.20 | 52.63 | 08/02/2025 | 05:56:25 | 70.24, 87.56 | 52.54 | 15.36 | 72 |
| 2 | 08/02/2025 | 06:45:52 | -70.04,-105.07 | 127.65 | 08/02/2025 | 06:45:57 | -70.02,-105.12 | 127.67 | 2.63 | 5 |
| 3 | 08/02/2025 | 07:36:36 | 69.94, 62.38 | 52.26 | 08/02/2025 | 07:35:24 | 69.92, 62.37 | 52.24 | 3.15 | 72 |
| 4 | 08/04/2025 | 22:12:05 | 70.13,-156.76 | 53.15 | 08/04/2025 | 22:12:56 | 70.11,-156.75 | 53.11 | 2.74 | 51 |
| 5 | 08/04/2025 | 23:02:47 | -70.01, 10.74 | 126.97 | 08/04/2025 | 23:02:26 | -70.00, 10.73 | 126.98 | 1.27 | 21 |
| 6 | 08/04/2025 | 23:53:14 | 69.02, 179.48 | 52.00 | 08/04/2025 | 23:52:08 | 69.06, 177.11 | 52.14 | 94.69 | 66 |
| 7 | 08/07/2025 | 14:28:59 | 70.06, -40.88 | 53.81 | 08/07/2025 | 14:29:25 | 70.06, -40.93 | 53.81 | 1.68 | 26 |
| 8 | 08/07/2025 | 15:19:41 | -69.94, 126.62 | 126.31 | 08/07/2025 | 15:18:55 | -69.96, 126.56 | 126.29 | 3.12 | 46 |
| 9 | 08/10/2025 | 05:55:12 | -70.29, -92.77 | 125.20 | 08/10/2025 | 05:56:24 | -70.22, -92.45 | 125.29 | 13.99 | 72 |
| 10 | 08/10/2025 | 06:45:53 | 70.05, 74.90 | 54.57 | 08/10/2025 | 06:45:52 | 70.05, 74.95 | 54.56 | 1.79 | 1 |
| 11 | 08/10/2025 | 07:36:35 | -69.92,-117.59 | 125.56 | 08/10/2025 | 07:35:22 | -69.95,-117.56 | 125.53 | 3.12 | 73 |
| 12 | 08/12/2025 | 22:12:04 | -70.12, 23.26 | 124.58 | 08/12/2025 | 22:12:53 | -70.14, 23.32 | 124.57 | 3.30 | 49 |
| 13 | 08/12/2025 | 23:02:47 | 69.99,-169.24 | 55.31 | 08/12/2025 | 23:02:21 | 69.97,-169.28 | 55.28 | 3.37 | 26 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/31/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/31/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9