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: 7/28/2025
| 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 | 07/30/2025 | 14:28:58 | -70.10, 139.07 | 128.26 | 07/30/2025 | 14:29:27 | -70.10, 139.10 | 128.27 | 1.37 | 29 |
| 2 | 07/30/2025 | 15:19:42 | 70.01, -53.48 | 51.66 | 07/30/2025 | 15:18:54 | 69.99, -53.40 | 51.65 | 3.22 | 48 |
| 3 | 08/02/2025 | 05:55:14 | 70.35, 87.14 | 52.67 | 08/02/2025 | 05:56:25 | 70.26, 87.58 | 52.55 | 19.42 | 71 |
| 4 | 08/02/2025 | 06:45:53 | -70.07,-105.12 | 127.62 | 08/02/2025 | 06:45:57 | -70.04,-105.09 | 127.65 | 3.24 | 4 |
| 5 | 08/02/2025 | 07:36:36 | 69.93, 62.40 | 52.25 | 08/02/2025 | 07:35:24 | 69.93, 62.40 | 52.26 | 0.44 | 72 |
| 6 | 08/04/2025 | 22:12:05 | 70.12,-156.74 | 53.13 | 08/04/2025 | 22:12:56 | 70.12,-156.72 | 53.13 | 0.87 | 51 |
| 7 | 08/04/2025 | 23:02:47 | -69.99, 10.76 | 126.99 | 08/04/2025 | 23:02:26 | -70.02, 10.76 | 126.96 | 3.04 | 21 |
| 8 | 08/04/2025 | 23:53:14 | 69.01, 179.50 | 51.99 | 08/04/2025 | 23:52:08 | 69.08, 177.13 | 52.16 | 94.59 | 66 |
| 9 | 08/07/2025 | 14:28:59 | 70.11, -40.95 | 53.86 | 08/07/2025 | 14:29:24 | 70.08, -40.90 | 53.82 | 3.30 | 25 |
| 10 | 08/07/2025 | 15:19:41 | -69.98, 126.56 | 126.27 | 08/07/2025 | 15:18:54 | -69.98, 126.59 | 126.26 | 1.26 | 47 |
| 11 | 08/10/2025 | 05:55:13 | -70.33, -92.83 | 125.16 | 08/10/2025 | 05:56:24 | -70.25, -92.42 | 125.26 | 18.06 | 71 |
| 12 | 08/10/2025 | 06:45:53 | 70.04, 74.92 | 54.56 | 08/10/2025 | 06:45:53 | 70.02, 74.90 | 54.53 | 3.05 | 0 |
| 13 | 08/10/2025 | 07:36:35 | -69.91,-117.57 | 125.57 | 08/10/2025 | 07:35:23 | -69.92,-117.60 | 125.56 | 1.54 | 72 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/28/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/28/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9