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: 6/11/2025
| 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 | 06/12/2025 | 14:28:39 | -70.12, 139.12 | 133.13 | 06/12/2025 | 14:29:06 | -70.10, 139.10 | 133.15 | 2.17 | 27 |
| 2 | 06/12/2025 | 15:19:24 | 70.02, -53.42 | 46.77 | 06/12/2025 | 15:18:33 | 70.00, -53.40 | 46.76 | 2.11 | 51 |
| 3 | 06/15/2025 | 05:54:56 | 70.29, 87.30 | 46.92 | 06/15/2025 | 05:56:07 | 70.25, 87.55 | 46.87 | 10.10 | 71 |
| 4 | 06/15/2025 | 06:45:35 | -70.07,-105.04 | 133.31 | 06/15/2025 | 06:45:38 | -70.09,-105.05 | 133.29 | 2.08 | 3 |
| 5 | 06/15/2025 | 07:36:19 | 69.92, 62.49 | 46.54 | 06/15/2025 | 07:35:06 | 69.93, 62.37 | 46.56 | 4.72 | 73 |
| 6 | 06/17/2025 | 22:11:50 | 70.14,-156.70 | 46.69 | 06/17/2025 | 22:12:40 | 70.16,-156.70 | 46.70 | 2.77 | 50 |
| 7 | 06/17/2025 | 23:02:32 | -70.07, 10.71 | 133.38 | 06/17/2025 | 23:02:10 | -70.06, 10.78 | 133.40 | 3.21 | 22 |
| 8 | 06/17/2025 | 23:52:59 | 69.02, 179.54 | 45.53 | 06/17/2025 | 23:51:53 | 69.06, 177.08 | 45.66 | 97.99 | 66 |
| 9 | 06/20/2025 | 14:28:46 | 70.10, -40.88 | 46.62 | 06/20/2025 | 14:29:12 | 70.11, -40.90 | 46.62 | 1.61 | 26 |
| 10 | 06/20/2025 | 15:19:28 | -70.03, 126.54 | 133.46 | 06/20/2025 | 15:18:42 | -70.01, 126.59 | 133.48 | 3.07 | 46 |
| 11 | 06/23/2025 | 05:55:01 | -70.41, -92.90 | 133.04 | 06/23/2025 | 05:56:13 | -70.32, -92.36 | 133.16 | 22.52 | 72 |
| 12 | 06/23/2025 | 06:45:41 | 70.06, 74.94 | 46.60 | 06/23/2025 | 06:45:43 | 70.04, 74.88 | 46.58 | 3.15 | 2 |
| 13 | 06/23/2025 | 07:36:22 | -69.94,-117.55 | 133.53 | 06/23/2025 | 07:35:13 | -69.94,-117.62 | 133.52 | 2.75 | 69 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/11/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 06/11/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9