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: 5/18/2025
| 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 | 05/19/2025 | 14:28:23 | 70.20, -40.93 | 50.22 | 05/19/2025 | 14:29:03 | 70.18, -40.90 | 50.20 | 2.34 | 40 |
| 2 | 05/19/2025 | 15:19:04 | -70.07, 126.60 | 129.93 | 05/19/2025 | 15:18:33 | -70.06, 126.56 | 129.93 | 1.47 | 31 |
| 3 | 05/22/2025 | 05:54:47 | -70.86, -93.53 | 129.63 | 05/22/2025 | 05:55:55 | -70.76, -91.82 | 129.78 | 63.81 | 68 |
| 4 | 05/22/2025 | 06:45:20 | 70.16, 74.90 | 49.63 | 05/22/2025 | 06:45:31 | 70.17, 74.95 | 49.64 | 2.21 | 11 |
| 5 | 05/22/2025 | 07:36:01 | -70.03,-117.58 | 130.51 | 05/22/2025 | 07:35:01 | -70.05,-117.58 | 130.48 | 2.81 | 60 |
| 6 | 05/24/2025 | 22:11:32 | -70.25, 23.21 | 130.77 | 05/24/2025 | 22:12:31 | -70.23, 23.28 | 130.80 | 3.52 | 59 |
| 7 | 05/24/2025 | 23:02:16 | 70.12,-169.28 | 49.09 | 05/24/2025 | 23:01:58 | 70.13,-169.22 | 49.10 | 2.21 | 18 |
| 8 | 05/24/2025 | 23:52:47 | -69.46, -0.98 | 131.59 | 05/24/2025 | 23:51:37 | -69.52, -2.43 | 131.50 | 56.72 | 70 |
| 9 | 05/27/2025 | 14:28:28 | -70.17, 139.10 | 131.31 | 05/27/2025 | 14:28:59 | -70.17, 139.07 | 131.32 | 1.07 | 31 |
| 10 | 05/27/2025 | 15:19:12 | 70.04, -53.39 | 48.55 | 05/27/2025 | 15:18:26 | 70.06, -53.44 | 48.58 | 2.79 | 46 |
| 11 | 05/30/2025 | 05:54:44 | 70.28, 87.37 | 48.40 | 05/30/2025 | 05:55:56 | 70.24, 87.42 | 48.35 | 4.70 | 72 |
| 12 | 05/30/2025 | 06:45:25 | -70.15,-105.11 | 131.75 | 05/30/2025 | 06:45:26 | -70.13,-105.10 | 131.77 | 1.93 | 1 |
| 13 | 05/30/2025 | 07:36:07 | 69.91, 62.56 | 48.01 | 05/30/2025 | 07:34:54 | 69.96, 62.31 | 48.07 | 11.23 | 73 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/18/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 05/18/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9