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: 5/15/2025
| 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 | 05/16/2025 | 22:11:25 | 70.20,-156.67 | 50.80 | 05/16/2025 | 22:12:32 | 70.22,-156.72 | 50.81 | 3.02 | 67 |
| 2 | 05/16/2025 | 23:02:07 | -70.11, 10.77 | 129.30 | 05/16/2025 | 23:02:02 | -70.10, 10.74 | 129.32 | 1.97 | 5 |
| 3 | 05/16/2025 | 23:52:45 | 69.67, 178.75 | 50.24 | 05/16/2025 | 23:51:34 | 69.72, 177.86 | 50.31 | 34.71 | 71 |
| 4 | 05/19/2025 | 14:28:23 | 70.19, -40.92 | 50.21 | 05/19/2025 | 14:28:58 | 70.18, -40.89 | 50.19 | 2.22 | 35 |
| 5 | 05/19/2025 | 15:19:04 | -70.06, 126.61 | 129.94 | 05/19/2025 | 15:18:28 | -70.06, 126.58 | 129.93 | 1.31 | 36 |
| 6 | 05/22/2025 | 05:54:41 | -70.59, -93.09 | 129.92 | 05/22/2025 | 05:55:52 | -70.44, -92.26 | 130.09 | 34.73 | 71 |
| 7 | 05/22/2025 | 06:45:19 | 70.15, 74.92 | 49.62 | 05/22/2025 | 06:45:23 | 70.12, 74.91 | 49.59 | 3.62 | 4 |
| 8 | 05/22/2025 | 07:36:00 | -70.01,-117.56 | 130.53 | 05/22/2025 | 07:34:53 | -70.00,-117.61 | 130.53 | 2.43 | 67 |
| 9 | 05/24/2025 | 22:11:31 | -70.18, 23.32 | 130.84 | 05/24/2025 | 22:12:21 | -70.20, 23.28 | 130.83 | 2.32 | 50 |
| 10 | 05/24/2025 | 23:02:16 | 70.11,-169.26 | 49.08 | 05/24/2025 | 23:01:48 | 70.09,-169.23 | 49.06 | 2.41 | 28 |
| 11 | 05/24/2025 | 23:52:40 | -69.07, -0.44 | 131.99 | 05/24/2025 | 23:51:34 | -69.09, -2.94 | 131.91 | 99.52 | 66 |
| 12 | 05/27/2025 | 13:37:58 | 70.86, -29.33 | 49.42 | 05/27/2025 | 13:39:07 | 70.75, -27.64 | 49.27 | 62.77 | 69 |
| 13 | 05/27/2025 | 14:28:28 | -70.15, 139.13 | 131.33 | 05/27/2025 | 14:28:46 | -70.15, 139.11 | 131.33 | 1.02 | 18 |
| 14 | 05/27/2025 | 15:19:12 | 70.02, -53.37 | 48.53 | 05/27/2025 | 15:18:13 | 70.04, -53.41 | 48.56 | 2.64 | 59 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/15/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 05/15/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9