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: 7/7/2025
| 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, -92.71 | 132.06 | 07/09/2025 | 05:56:18 | -70.22, -92.49 | 132.13 | 10.10 | 72 |
| 2 | 07/09/2025 | 06:45:48 | 70.04, 74.96 | 47.70 | 07/09/2025 | 06:45:46 | 70.06, 74.93 | 47.72 | 2.68 | 2 |
| 3 | 07/09/2025 | 07:36:29 | -69.90,-117.53 | 132.44 | 07/09/2025 | 07:35:16 | -69.95,-117.59 | 132.38 | 5.50 | 73 |
| 4 | 07/11/2025 | 22:11:59 | -70.15, 23.24 | 131.83 | 07/11/2025 | 22:12:47 | -70.14, 23.29 | 131.85 | 2.11 | 48 |
| 5 | 07/11/2025 | 23:02:43 | 70.03,-169.27 | 48.05 | 07/11/2025 | 23:02:14 | 70.04,-169.22 | 48.06 | 2.16 | 29 |
| 6 | 07/14/2025 | 13:38:27 | 70.97, -29.63 | 49.43 | 07/14/2025 | 13:39:34 | 70.87, -27.37 | 49.24 | 82.91 | 67 |
| 7 | 07/14/2025 | 14:28:54 | -70.09, 139.10 | 131.50 | 07/14/2025 | 14:29:16 | -70.11, 139.13 | 131.48 | 3.02 | 22 |
| 8 | 07/14/2025 | 15:19:38 | 69.97, -53.42 | 48.39 | 07/14/2025 | 15:18:43 | 70.00, -53.38 | 48.42 | 3.08 | 55 |
| 9 | 07/17/2025 | 05:55:08 | 70.18, 87.41 | 49.03 | 07/17/2025 | 05:56:15 | 70.16, 87.46 | 49.00 | 2.99 | 67 |
| 10 | 07/17/2025 | 06:45:50 | -70.08,-105.12 | 131.07 | 07/17/2025 | 06:45:45 | -70.06,-105.05 | 131.09 | 3.35 | 5 |
| 11 | 07/17/2025 | 07:36:28 | 69.65, 62.82 | 48.49 | 07/17/2025 | 07:35:16 | 69.72, 62.13 | 48.60 | 27.98 | 72 |
| 12 | 07/19/2025 | 22:12:02 | 70.08,-156.67 | 49.41 | 07/19/2025 | 22:12:44 | 70.09,-156.75 | 49.42 | 3.32 | 42 |
| 13 | 07/19/2025 | 23:02:45 | -70.02, 10.73 | 130.65 | 07/19/2025 | 23:02:14 | -69.99, 10.75 | 130.67 | 3.22 | 31 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/7/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/07/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9