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: 4/20/2025
| 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 | 04/20/2025 | 06:44:52 | 70.21, 74.96 | 58.52 | 04/20/2025 | 06:45:49 | 70.17, 74.96 | 58.47 | 3.74 | 57 |
| 2 | 04/20/2025 | 07:35:34 | -70.09,-117.54 | 121.62 | 04/20/2025 | 07:35:18 | -70.11,-117.49 | 121.60 | 2.89 | 16 |
| 3 | 04/20/2025 | 08:26:05 | 69.32, 50.91 | 57.57 | 04/20/2025 | 08:24:57 | 69.35, 49.10 | 57.65 | 70.84 | 68 |
| 4 | 04/22/2025 | 23:01:41 | 70.15,-169.15 | 57.55 | 04/22/2025 | 23:02:16 | 70.13,-169.22 | 57.52 | 3.26 | 35 |
| 5 | 04/22/2025 | 23:52:24 | -70.08, -1.74 | 122.54 | 04/22/2025 | 23:51:45 | -70.07, -1.67 | 122.55 | 3.08 | 39 |
| 6 | 04/25/2025 | 14:27:56 | -70.75, 138.36 | 122.70 | 04/25/2025 | 14:29:06 | -70.64, 139.78 | 122.85 | 53.37 | 70 |
| 7 | 04/25/2025 | 15:18:30 | 70.15, -53.36 | 56.67 | 04/25/2025 | 15:18:40 | 70.15, -53.30 | 56.67 | 2.62 | 10 |
| 8 | 04/25/2025 | 16:09:12 | -70.03, 114.13 | 123.47 | 04/25/2025 | 16:08:10 | -70.04, 114.18 | 123.46 | 2.04 | 62 |
| 9 | 04/28/2025 | 06:44:35 | -70.19,-104.94 | 124.14 | 04/28/2025 | 06:45:39 | -70.19,-104.99 | 124.14 | 1.84 | 64 |
| 10 | 04/28/2025 | 07:35:19 | 70.11, 62.49 | 55.77 | 04/28/2025 | 07:35:06 | 70.08, 62.50 | 55.74 | 3.13 | 13 |
| 11 | 04/28/2025 | 08:25:53 | -69.57,-129.39 | 124.80 | 04/28/2025 | 08:24:42 | -69.64,-130.48 | 124.70 | 43.13 | 71 |
| 12 | 04/30/2025 | 23:01:24 | -70.16, 10.89 | 125.00 | 04/30/2025 | 23:02:04 | -70.14, 10.83 | 125.02 | 3.31 | 40 |
| 13 | 04/30/2025 | 23:52:08 | 70.08, 178.33 | 54.91 | 04/30/2025 | 23:51:30 | 70.08, 178.39 | 54.91 | 2.35 | 38 |
| 14 | 05/03/2025 | 14:27:41 | 70.78, -41.62 | 54.87 | 05/03/2025 | 14:28:50 | 70.65, -40.16 | 54.69 | 55.71 | 69 |
| 15 | 05/03/2025 | 15:18:13 | -70.14, 126.72 | 125.81 | 05/03/2025 | 15:18:27 | -70.16, 126.75 | 125.80 | 2.15 | 14 |
| 16 | 05/03/2025 | 16:08:56 | 70.01, -65.77 | 54.04 | 05/03/2025 | 16:07:54 | 70.04, -65.77 | 54.08 | 3.50 | 62 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/20/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/20/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9