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: 4/16/2025
| 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 | 04/17/2025 | 14:28:08 | 70.51, -41.30 | 59.76 | 04/17/2025 | 14:29:19 | 70.38, -40.63 | 59.60 | 29.26 | 71 |
| 2 | 04/17/2025 | 15:18:45 | -70.13, 126.61 | 120.65 | 04/17/2025 | 15:18:52 | -70.10, 126.61 | 120.68 | 3.41 | 7 |
| 3 | 04/17/2025 | 16:09:28 | 70.00, -65.88 | 59.20 | 04/17/2025 | 16:08:19 | 70.00, -65.90 | 59.21 | 0.82 | 69 |
| 4 | 04/20/2025 | 06:44:51 | 70.18, 75.01 | 58.48 | 04/20/2025 | 06:45:48 | 70.20, 75.00 | 58.50 | 2.72 | 57 |
| 5 | 04/20/2025 | 07:35:34 | -70.11,-117.57 | 121.60 | 04/20/2025 | 07:35:18 | -70.09,-117.52 | 121.62 | 2.83 | 16 |
| 6 | 04/20/2025 | 08:26:05 | 69.34, 50.88 | 57.60 | 04/20/2025 | 08:24:56 | 69.37, 49.14 | 57.68 | 68.19 | 69 |
| 7 | 04/22/2025 | 23:01:41 | 70.17,-169.19 | 57.57 | 04/22/2025 | 23:02:15 | 70.14,-169.20 | 57.54 | 3.17 | 34 |
| 8 | 04/22/2025 | 23:52:23 | -70.05, -1.69 | 122.57 | 04/22/2025 | 23:51:45 | -70.03, -1.72 | 122.58 | 2.11 | 38 |
| 9 | 04/25/2025 | 14:27:56 | -70.72, 138.42 | 122.73 | 04/25/2025 | 14:29:06 | -70.64, 139.78 | 122.85 | 51.00 | 70 |
| 10 | 04/25/2025 | 15:18:30 | 70.12, -53.32 | 56.64 | 04/25/2025 | 15:18:40 | 70.15, -53.30 | 56.66 | 2.74 | 10 |
| 11 | 04/25/2025 | 16:09:12 | -70.00, 114.18 | 123.50 | 04/25/2025 | 16:08:11 | -69.98, 114.10 | 123.51 | 3.36 | 61 |
| 12 | 04/28/2025 | 06:44:36 | -70.21,-104.98 | 124.11 | 04/28/2025 | 06:45:38 | -70.22,-104.95 | 124.12 | 1.55 | 62 |
| 13 | 04/28/2025 | 07:35:19 | 70.09, 62.52 | 55.75 | 04/28/2025 | 07:35:05 | 70.10, 62.53 | 55.76 | 1.89 | 14 |
| 14 | 04/28/2025 | 08:25:53 | -69.54,-129.35 | 124.83 | 04/28/2025 | 08:24:42 | -69.61,-130.51 | 124.73 | 45.91 | 71 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/16/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/16/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9