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: 4/18/2025
| 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 | 04/20/2025 | 06:44:51 | 70.18, 75.01 | 58.49 | 04/20/2025 | 06:45:48 | 70.21, 75.01 | 58.51 | 3.52 | 57 |
| 2 | 04/20/2025 | 07:35:34 | -70.11,-117.58 | 121.60 | 04/20/2025 | 07:35:18 | -70.10,-117.52 | 121.62 | 3.01 | 16 |
| 3 | 04/20/2025 | 08:26:05 | 69.34, 50.87 | 57.60 | 04/20/2025 | 08:24:56 | 69.38, 49.15 | 57.69 | 67.62 | 69 |
| 4 | 04/22/2025 | 23:01:41 | 70.17,-169.19 | 57.57 | 04/22/2025 | 23:02:15 | 70.17,-169.16 | 57.56 | 1.32 | 34 |
| 5 | 04/22/2025 | 23:52:23 | -70.05, -1.69 | 122.57 | 04/22/2025 | 23:51:45 | -70.06, -1.68 | 122.56 | 0.66 | 38 |
| 6 | 04/25/2025 | 14:27:57 | -70.78, 138.32 | 122.67 | 04/25/2025 | 14:29:06 | -70.69, 139.85 | 122.80 | 57.16 | 69 |
| 7 | 04/25/2025 | 15:18:30 | 70.13, -53.33 | 56.64 | 04/25/2025 | 15:18:41 | 70.15, -53.31 | 56.66 | 2.29 | 11 |
| 8 | 04/25/2025 | 16:09:12 | -70.01, 114.17 | 123.50 | 04/25/2025 | 16:08:11 | -70.04, 114.17 | 123.46 | 3.31 | 61 |
| 9 | 04/28/2025 | 06:44:36 | -70.22,-105.00 | 124.10 | 04/28/2025 | 06:45:40 | -70.20,-104.99 | 124.14 | 2.92 | 64 |
| 10 | 04/28/2025 | 07:35:19 | 70.09, 62.51 | 55.76 | 04/28/2025 | 07:35:07 | 70.08, 62.50 | 55.74 | 1.32 | 12 |
| 11 | 04/28/2025 | 08:25:54 | -69.60,-129.44 | 124.77 | 04/28/2025 | 08:24:43 | -69.65,-130.48 | 124.69 | 40.41 | 71 |
| 12 | 04/30/2025 | 23:01:23 | -70.15, 10.91 | 125.01 | 04/30/2025 | 23:02:04 | -70.15, 10.85 | 125.01 | 2.46 | 41 |
| 13 | 04/30/2025 | 23:52:07 | 70.07, 178.34 | 54.91 | 04/30/2025 | 23:51:30 | 70.09, 178.40 | 54.93 | 3.26 | 37 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/18/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/18/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9