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: 5/20/2025
| 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 | 05/22/2025 | 05:54:46 | -70.84, -93.49 | 129.66 | 05/22/2025 | 05:55:55 | -70.74, -91.85 | 129.80 | 61.25 | 69 |
| 2 | 05/22/2025 | 06:45:19 | 70.13, 74.94 | 49.61 | 05/22/2025 | 06:45:31 | 70.15, 74.93 | 49.62 | 2.08 | 12 |
| 3 | 05/22/2025 | 07:36:01 | -70.05,-117.62 | 130.48 | 05/22/2025 | 07:35:01 | -70.03,-117.61 | 130.50 | 2.60 | 60 |
| 4 | 05/24/2025 | 22:11:32 | -70.22, 23.25 | 130.80 | 05/24/2025 | 22:12:32 | -70.23, 23.27 | 130.80 | 0.81 | 60 |
| 5 | 05/24/2025 | 23:02:16 | 70.09,-169.24 | 49.06 | 05/24/2025 | 23:01:59 | 70.12,-169.23 | 49.10 | 3.59 | 17 |
| 6 | 05/24/2025 | 23:52:48 | -69.49, -1.02 | 131.57 | 05/24/2025 | 23:51:38 | -69.51, -2.44 | 131.50 | 55.26 | 70 |
| 7 | 05/27/2025 | 14:28:29 | -70.19, 139.06 | 131.29 | 05/27/2025 | 14:29:00 | -70.18, 139.09 | 131.30 | 1.40 | 31 |
| 8 | 05/27/2025 | 15:19:13 | 70.06, -53.43 | 48.57 | 05/27/2025 | 15:18:27 | 70.08, -53.42 | 48.59 | 2.11 | 46 |
| 9 | 05/30/2025 | 05:54:45 | 70.34, 87.26 | 48.47 | 05/30/2025 | 05:55:56 | 70.28, 87.48 | 48.39 | 10.78 | 71 |
| 10 | 05/30/2025 | 06:45:24 | -70.11,-105.05 | 131.78 | 05/30/2025 | 06:45:27 | -70.12,-105.12 | 131.78 | 2.62 | 3 |
| 11 | 05/30/2025 | 07:36:07 | 69.92, 62.54 | 48.02 | 05/30/2025 | 07:34:55 | 69.95, 62.29 | 48.06 | 9.77 | 72 |
| 12 | 06/01/2025 | 22:11:40 | 70.22,-156.78 | 47.97 | 06/01/2025 | 22:12:24 | 70.19,-156.76 | 47.94 | 2.90 | 44 |
| 13 | 06/01/2025 | 23:02:21 | -70.09, 10.74 | 132.17 | 06/01/2025 | 23:01:54 | -70.08, 10.72 | 132.18 | 0.97 | 27 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/20/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 05/20/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9