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: 6/12/2025
| 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 | 06/15/2025 | 05:54:56 | 70.28, 87.31 | 46.92 | 06/15/2025 | 05:56:07 | 70.25, 87.56 | 46.87 | 9.64 | 71 |
| 2 | 06/15/2025 | 06:45:35 | -70.07,-105.04 | 133.31 | 06/15/2025 | 06:45:38 | -70.09,-105.05 | 133.29 | 2.44 | 3 |
| 3 | 06/15/2025 | 07:36:19 | 69.91, 62.50 | 46.53 | 06/15/2025 | 07:35:06 | 69.93, 62.38 | 46.56 | 5.16 | 73 |
| 4 | 06/17/2025 | 22:11:50 | 70.13,-156.69 | 46.68 | 06/17/2025 | 22:12:40 | 70.16,-156.70 | 46.70 | 3.10 | 50 |
| 5 | 06/17/2025 | 23:02:32 | -70.07, 10.72 | 133.39 | 06/17/2025 | 23:02:10 | -70.05, 10.78 | 133.41 | 3.06 | 22 |
| 6 | 06/17/2025 | 23:52:59 | 69.02, 179.55 | 45.53 | 06/17/2025 | 23:51:53 | 69.06, 177.08 | 45.65 | 98.39 | 66 |
| 7 | 06/20/2025 | 14:28:45 | 70.09, -40.87 | 46.61 | 06/20/2025 | 14:29:11 | 70.10, -40.91 | 46.62 | 1.78 | 26 |
| 8 | 06/20/2025 | 15:19:26 | -69.98, 126.63 | 133.51 | 06/20/2025 | 15:18:41 | -70.00, 126.58 | 133.49 | 3.14 | 45 |
| 9 | 06/23/2025 | 05:55:01 | -70.41, -92.90 | 133.04 | 06/23/2025 | 05:56:13 | -70.30, -92.39 | 133.18 | 22.46 | 72 |
| 10 | 06/23/2025 | 06:45:41 | 70.06, 74.95 | 46.60 | 06/23/2025 | 06:45:42 | 70.08, 74.94 | 46.62 | 2.55 | 1 |
| 11 | 06/23/2025 | 07:36:23 | -69.99,-117.63 | 133.48 | 06/23/2025 | 07:35:12 | -69.98,-117.57 | 133.48 | 2.49 | 71 |
| 12 | 06/25/2025 | 22:11:53 | -70.16, 23.25 | 133.23 | 06/25/2025 | 22:12:46 | -70.16, 23.29 | 133.24 | 1.57 | 53 |
| 13 | 06/25/2025 | 23:02:37 | 70.03,-169.24 | 46.63 | 06/25/2025 | 23:02:13 | 70.04,-169.23 | 46.65 | 1.68 | 24 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/12/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 06/12/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9