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: 5/13/2025
| 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 | 05/14/2025 | 05:54:45 | 71.15, 86.01 | 52.42 | 05/14/2025 | 05:55:51 | 71.05, 88.64 | 52.25 | 95.47 | 66 |
| 2 | 05/14/2025 | 06:45:10 | -70.17,-105.08 | 128.62 | 05/14/2025 | 06:45:35 | -70.16,-105.05 | 128.63 | 1.35 | 25 |
| 3 | 05/14/2025 | 07:35:54 | 70.05, 62.42 | 51.25 | 05/14/2025 | 07:35:02 | 70.06, 62.45 | 51.27 | 2.10 | 52 |
| 4 | 05/16/2025 | 22:11:25 | 70.20,-156.68 | 50.80 | 05/16/2025 | 22:12:32 | 70.21,-156.73 | 50.81 | 2.05 | 67 |
| 5 | 05/16/2025 | 23:02:07 | -70.11, 10.77 | 129.30 | 05/16/2025 | 23:02:02 | -70.09, 10.74 | 129.32 | 2.67 | 5 |
| 6 | 05/16/2025 | 23:52:45 | 69.67, 178.74 | 50.24 | 05/16/2025 | 23:51:34 | 69.71, 177.85 | 50.31 | 34.48 | 71 |
| 7 | 05/19/2025 | 14:28:22 | 70.15, -40.84 | 50.17 | 05/19/2025 | 14:28:58 | 70.17, -40.90 | 50.18 | 3.12 | 36 |
| 8 | 05/19/2025 | 15:19:04 | -70.06, 126.61 | 129.93 | 05/19/2025 | 15:18:28 | -70.05, 126.57 | 129.94 | 1.74 | 36 |
| 9 | 05/22/2025 | 05:54:41 | -70.54, -93.01 | 129.97 | 05/22/2025 | 05:55:53 | -70.43, -92.28 | 130.10 | 29.78 | 72 |
| 10 | 05/22/2025 | 06:45:20 | 70.15, 74.91 | 49.63 | 05/22/2025 | 06:45:23 | 70.16, 74.97 | 49.63 | 2.48 | 3 |
| 11 | 05/22/2025 | 07:36:01 | -70.02,-117.56 | 130.52 | 05/22/2025 | 07:34:53 | -70.04,-117.55 | 130.49 | 3.25 | 68 |
| 12 | 05/24/2025 | 22:11:31 | -70.18, 23.31 | 130.84 | 05/24/2025 | 22:12:21 | -70.18, 23.25 | 130.85 | 2.23 | 50 |
| 13 | 05/24/2025 | 23:02:15 | 70.06,-169.19 | 49.03 | 05/24/2025 | 23:01:48 | 70.07,-169.26 | 49.04 | 2.94 | 27 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/13/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 05/13/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9