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: 5/11/2025
| 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 | 05/11/2025 | 14:28:13 | -70.23, 139.08 | 127.90 | 05/11/2025 | 14:29:08 | -70.22, 139.15 | 127.91 | 2.50 | 55 |
| 2 | 05/11/2025 | 15:18:56 | 70.05, -53.35 | 51.92 | 05/11/2025 | 15:18:36 | 70.07, -53.43 | 51.93 | 3.46 | 20 |
| 3 | 05/11/2025 | 16:09:25 | -69.28, 115.11 | 128.89 | 05/11/2025 | 16:08:17 | -69.34, 113.22 | 128.78 | 74.93 | 68 |
| 4 | 05/14/2025 | 05:54:45 | 71.14, 86.02 | 52.41 | 05/14/2025 | 05:55:51 | 71.06, 88.65 | 52.26 | 95.22 | 66 |
| 5 | 05/14/2025 | 06:45:10 | -70.16,-105.06 | 128.63 | 05/14/2025 | 06:45:35 | -70.18,-105.03 | 128.62 | 1.83 | 25 |
| 6 | 05/14/2025 | 07:35:54 | 70.04, 62.43 | 51.25 | 05/14/2025 | 07:35:03 | 70.02, 62.39 | 51.22 | 3.21 | 51 |
| 7 | 05/16/2025 | 22:11:26 | 70.25,-156.75 | 50.85 | 05/16/2025 | 22:12:32 | 70.22,-156.72 | 50.81 | 3.29 | 66 |
| 8 | 05/16/2025 | 23:02:07 | -70.10, 10.78 | 129.31 | 05/16/2025 | 23:02:02 | -70.10, 10.75 | 129.31 | 1.27 | 5 |
| 9 | 05/16/2025 | 23:52:45 | 69.66, 178.75 | 50.24 | 05/16/2025 | 23:51:34 | 69.72, 177.86 | 50.31 | 34.84 | 71 |
| 10 | 05/19/2025 | 14:28:23 | 70.19, -40.91 | 50.21 | 05/19/2025 | 14:28:58 | 70.17, -40.89 | 50.19 | 2.01 | 35 |
| 11 | 05/19/2025 | 15:19:04 | -70.05, 126.62 | 129.95 | 05/19/2025 | 15:18:28 | -70.06, 126.58 | 129.93 | 2.02 | 36 |
| 12 | 05/22/2025 | 05:54:41 | -70.58, -93.07 | 129.93 | 05/22/2025 | 05:55:52 | -70.44, -92.26 | 130.09 | 33.94 | 71 |
| 13 | 05/22/2025 | 06:45:19 | 70.14, 74.92 | 49.62 | 05/22/2025 | 06:45:22 | 70.16, 74.98 | 49.63 | 3.11 | 3 |
| 14 | 05/22/2025 | 07:36:00 | -70.00,-117.55 | 130.54 | 05/22/2025 | 07:34:53 | -70.00,-117.62 | 130.54 | 2.72 | 67 |
| 15 | 05/24/2025 | 22:11:31 | -70.17, 23.33 | 130.85 | 05/24/2025 | 22:12:21 | -70.19, 23.26 | 130.84 | 3.02 | 50 |
| 16 | 05/24/2025 | 23:02:16 | 70.10,-169.25 | 49.07 | 05/24/2025 | 23:01:48 | 70.07,-169.25 | 49.05 | 3.19 | 28 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/11/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 05/11/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9