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: 6/30/2025
| 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 | 07/01/2025 | 05:55:05 | 70.29, 87.26 | 47.19 | 07/01/2025 | 05:56:16 | 70.24, 87.53 | 47.11 | 12.24 | 71 |
| 2 | 07/01/2025 | 06:45:43 | -70.07,-105.08 | 133.04 | 07/01/2025 | 06:45:46 | -70.07,-105.08 | 133.05 | 0.10 | 3 |
| 3 | 07/01/2025 | 07:36:27 | 69.93, 62.44 | 46.81 | 07/01/2025 | 07:35:14 | 69.91, 62.35 | 46.81 | 4.08 | 73 |
| 4 | 07/03/2025 | 22:11:57 | 70.12,-156.70 | 47.22 | 07/03/2025 | 22:12:47 | 70.10,-156.78 | 47.20 | 3.11 | 50 |
| 5 | 07/03/2025 | 23:02:39 | -70.04, 10.73 | 132.86 | 07/03/2025 | 23:02:16 | -70.05, 10.78 | 132.85 | 2.13 | 23 |
| 6 | 07/06/2025 | 14:28:53 | 70.10, -40.91 | 47.46 | 07/06/2025 | 14:29:16 | 70.12, -40.86 | 47.48 | 3.03 | 23 |
| 7 | 07/06/2025 | 15:19:34 | -69.97, 126.61 | 132.68 | 07/06/2025 | 15:18:47 | -69.96, 126.54 | 132.67 | 2.57 | 47 |
| 8 | 07/09/2025 | 05:55:07 | -70.31, -92.78 | 132.01 | 07/09/2025 | 05:56:18 | -70.24, -92.45 | 132.11 | 14.60 | 71 |
| 9 | 07/09/2025 | 06:45:49 | 70.09, 74.87 | 47.76 | 07/09/2025 | 06:45:46 | 70.07, 74.95 | 47.74 | 3.37 | 3 |
| 10 | 07/09/2025 | 07:36:30 | -69.95,-117.60 | 132.39 | 07/09/2025 | 07:35:16 | -69.97,-117.56 | 132.36 | 3.04 | 74 |
| 11 | 07/11/2025 | 22:12:00 | -70.14, 23.25 | 131.84 | 07/11/2025 | 22:12:49 | -70.13, 23.27 | 131.86 | 1.17 | 49 |
| 12 | 07/11/2025 | 23:02:43 | 70.03,-169.27 | 48.05 | 07/11/2025 | 23:02:15 | 70.01,-169.25 | 48.03 | 1.67 | 28 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/30/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 06/30/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9