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: 7/8/2025
| 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 | 07/09/2025 | 05:55:06 | -70.27, -92.72 | 132.05 | 07/09/2025 | 05:56:18 | -70.21, -92.49 | 132.14 | 10.77 | 72 |
| 2 | 07/09/2025 | 06:45:48 | 70.04, 74.95 | 47.71 | 07/09/2025 | 06:45:46 | 70.06, 74.93 | 47.72 | 2.06 | 2 |
| 3 | 07/09/2025 | 07:36:29 | -69.91,-117.53 | 132.43 | 07/09/2025 | 07:35:16 | -69.94,-117.60 | 132.38 | 4.60 | 73 |
| 4 | 07/11/2025 | 22:11:59 | -70.15, 23.23 | 131.83 | 07/11/2025 | 22:12:47 | -70.14, 23.29 | 131.85 | 2.63 | 48 |
| 5 | 07/11/2025 | 23:02:43 | 70.03,-169.27 | 48.05 | 07/11/2025 | 23:02:14 | 70.04,-169.21 | 48.06 | 2.37 | 29 |
| 6 | 07/14/2025 | 13:38:27 | 70.97, -29.64 | 49.44 | 07/14/2025 | 13:39:34 | 70.88, -27.36 | 49.25 | 83.47 | 67 |
| 7 | 07/14/2025 | 14:28:54 | -70.09, 139.09 | 131.50 | 07/14/2025 | 14:29:16 | -70.12, 139.14 | 131.48 | 3.21 | 22 |
| 8 | 07/14/2025 | 15:19:38 | 69.98, -53.42 | 48.39 | 07/14/2025 | 15:18:44 | 69.95, -53.45 | 48.37 | 3.30 | 54 |
| 9 | 07/17/2025 | 05:55:08 | 70.19, 87.40 | 49.04 | 07/17/2025 | 05:56:15 | 70.17, 87.48 | 49.01 | 3.30 | 67 |
| 10 | 07/17/2025 | 06:45:49 | -70.03,-105.05 | 131.12 | 07/17/2025 | 06:45:46 | -70.02,-105.11 | 131.13 | 2.87 | 3 |
| 11 | 07/17/2025 | 07:36:28 | 69.66, 62.82 | 48.50 | 07/17/2025 | 07:35:16 | 69.74, 62.14 | 48.61 | 27.31 | 72 |
| 12 | 07/19/2025 | 22:12:03 | 70.14,-156.76 | 49.47 | 07/19/2025 | 22:12:44 | 70.11,-156.72 | 49.44 | 3.17 | 41 |
| 13 | 07/19/2025 | 23:02:45 | -70.03, 10.72 | 130.64 | 07/19/2025 | 23:02:14 | -70.01, 10.77 | 130.65 | 2.68 | 31 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/8/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/08/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9