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: 5/8/2025
| 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 | 05/08/2025 | 22:11:25 | -70.72, 22.54 | 126.69 | 05/08/2025 | 22:12:35 | -70.62, 23.85 | 126.82 | 49.57 | 70 |
| 2 | 05/08/2025 | 23:02:00 | 70.13,-169.23 | 52.70 | 05/08/2025 | 23:02:09 | 70.14,-169.21 | 52.70 | 1.16 | 9 |
| 3 | 05/08/2025 | 23:52:42 | -70.04, -1.76 | 127.41 | 05/08/2025 | 23:51:39 | -70.02, -1.74 | 127.43 | 1.90 | 63 |
| 4 | 05/11/2025 | 14:28:14 | -70.23, 139.07 | 127.89 | 05/11/2025 | 14:29:09 | -70.22, 139.14 | 127.92 | 3.18 | 55 |
| 5 | 05/11/2025 | 15:18:58 | 70.12, -53.44 | 51.98 | 05/11/2025 | 15:18:36 | 70.11, -53.36 | 51.98 | 3.02 | 22 |
| 6 | 05/11/2025 | 16:09:26 | -69.28, 115.10 | 128.89 | 05/11/2025 | 16:08:18 | -69.34, 113.21 | 128.79 | 74.75 | 68 |
| 7 | 05/14/2025 | 05:54:45 | 71.16, 86.00 | 52.42 | 05/14/2025 | 05:55:51 | 71.04, 88.63 | 52.25 | 95.54 | 66 |
| 8 | 05/14/2025 | 06:45:10 | -70.17,-105.08 | 128.62 | 05/14/2025 | 06:45:35 | -70.16,-105.05 | 128.63 | 1.42 | 25 |
| 9 | 05/14/2025 | 07:35:54 | 70.06, 62.41 | 51.26 | 05/14/2025 | 07:35:02 | 70.06, 62.44 | 51.26 | 1.27 | 52 |
| 10 | 05/16/2025 | 22:11:25 | 70.21,-156.70 | 50.81 | 05/16/2025 | 22:12:32 | 70.20,-156.75 | 50.79 | 2.62 | 67 |
| 11 | 05/16/2025 | 23:02:07 | -70.12, 10.76 | 129.29 | 05/16/2025 | 23:02:01 | -70.14, 10.80 | 129.27 | 2.75 | 6 |
| 12 | 05/16/2025 | 23:52:45 | 69.68, 178.73 | 50.25 | 05/16/2025 | 23:51:33 | 69.75, 177.91 | 50.35 | 32.48 | 72 |
| 13 | 05/19/2025 | 14:28:22 | 70.16, -40.86 | 50.18 | 05/19/2025 | 14:28:58 | 70.14, -40.94 | 50.16 | 3.50 | 36 |
| 14 | 05/19/2025 | 15:19:04 | -70.07, 126.59 | 129.92 | 05/19/2025 | 15:18:27 | -70.09, 126.62 | 129.91 | 2.14 | 37 |
| 15 | 05/22/2025 | 05:54:41 | -70.56, -93.03 | 129.95 | 05/22/2025 | 05:55:52 | -70.45, -92.24 | 130.08 | 31.51 | 71 |
| 16 | 05/22/2025 | 06:45:19 | 70.12, 74.96 | 49.60 | 05/22/2025 | 06:45:23 | 70.12, 74.92 | 49.59 | 1.45 | 4 |
| 17 | 05/22/2025 | 07:36:01 | -70.03,-117.59 | 130.51 | 05/22/2025 | 07:34:53 | -70.01,-117.60 | 130.52 | 2.34 | 68 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/8/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 05/08/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9