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: 4/8/2025
| 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 | 04/09/2025 | 14:28:15 | -70.22, 139.12 | 117.65 | 04/09/2025 | 14:29:26 | -70.20, 139.12 | 117.68 | 1.84 | 71 |
| 2 | 04/09/2025 | 15:18:57 | 70.08, -53.36 | 62.20 | 04/09/2025 | 15:18:52 | 70.10, -53.38 | 62.21 | 1.92 | 5 |
| 3 | 04/09/2025 | 16:09:37 | -69.86, 114.29 | 118.05 | 04/09/2025 | 16:08:24 | -69.88, 113.94 | 118.01 | 13.33 | 73 |
| 4 | 04/12/2025 | 06:45:04 | -70.16,-105.01 | 118.70 | 04/12/2025 | 06:45:56 | -70.18,-105.04 | 118.68 | 3.17 | 52 |
| 5 | 04/12/2025 | 07:35:48 | 70.08, 62.43 | 61.21 | 04/12/2025 | 07:35:23 | 70.08, 62.46 | 61.21 | 1.12 | 25 |
| 6 | 04/12/2025 | 08:26:14 | -69.11,-128.85 | 119.81 | 04/12/2025 | 08:25:07 | -69.20,-131.10 | 119.65 | 89.70 | 67 |
| 7 | 04/14/2025 | 23:01:55 | -70.16, 10.77 | 119.67 | 04/14/2025 | 23:02:27 | -70.16, 10.80 | 119.67 | 1.10 | 32 |
| 8 | 04/14/2025 | 23:52:38 | 70.04, 178.28 | 60.19 | 04/14/2025 | 23:51:54 | 70.05, 178.29 | 60.21 | 1.90 | 44 |
| 9 | 04/17/2025 | 14:28:12 | 70.73, -41.66 | 59.99 | 04/17/2025 | 14:29:21 | 70.62, -40.29 | 59.84 | 51.73 | 69 |
| 10 | 04/17/2025 | 15:18:45 | -70.13, 126.61 | 120.65 | 04/17/2025 | 15:18:58 | -70.14, 126.63 | 120.65 | 1.01 | 13 |
| 11 | 04/17/2025 | 16:09:28 | 70.01, -65.89 | 59.21 | 04/17/2025 | 16:08:25 | 70.02, -65.88 | 59.23 | 1.95 | 63 |
| 12 | 04/20/2025 | 06:44:52 | 70.19, 74.99 | 58.50 | 04/20/2025 | 06:45:59 | 70.21, 74.96 | 58.50 | 2.06 | 67 |
| 13 | 04/20/2025 | 07:35:34 | -70.11,-117.57 | 121.60 | 04/20/2025 | 07:35:28 | -70.11,-117.54 | 121.61 | 1.37 | 6 |
| 14 | 04/20/2025 | 08:26:11 | 69.67, 50.40 | 57.94 | 04/20/2025 | 08:25:00 | 69.72, 49.56 | 58.01 | 32.85 | 71 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/8/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/08/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9