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: 7/26/2025
| 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 | 07/27/2025 | 22:12:03 | -70.11, 23.29 | 128.89 | 07/27/2025 | 22:12:58 | -70.11, 23.24 | 128.89 | 2.17 | 55 |
| 2 | 07/27/2025 | 23:02:47 | 70.01,-169.25 | 51.02 | 07/27/2025 | 23:02:25 | 70.01,-169.27 | 51.02 | 0.69 | 22 |
| 3 | 07/27/2025 | 23:53:15 | -69.16, -0.70 | 129.87 | 07/27/2025 | 23:52:07 | -69.24, -2.68 | 129.70 | 78.74 | 68 |
| 4 | 07/30/2025 | 14:28:58 | -70.07, 139.11 | 128.29 | 07/30/2025 | 14:29:28 | -70.08, 139.07 | 128.29 | 1.91 | 30 |
| 5 | 07/30/2025 | 15:19:42 | 69.98, -53.44 | 51.62 | 07/30/2025 | 15:18:55 | 69.97, -53.44 | 51.62 | 0.86 | 47 |
| 6 | 08/02/2025 | 05:55:13 | 70.31, 87.19 | 52.64 | 08/02/2025 | 05:56:25 | 70.23, 87.55 | 52.53 | 16.28 | 72 |
| 7 | 08/02/2025 | 06:45:52 | -70.04,-105.07 | 127.65 | 08/02/2025 | 06:45:57 | -70.02,-105.12 | 127.67 | 2.68 | 5 |
| 8 | 08/02/2025 | 07:36:36 | 69.95, 62.37 | 52.27 | 08/02/2025 | 07:35:23 | 69.96, 62.44 | 52.29 | 2.92 | 73 |
| 9 | 08/04/2025 | 22:12:04 | 70.08,-156.68 | 53.10 | 08/04/2025 | 22:12:56 | 70.10,-156.76 | 53.11 | 3.43 | 52 |
| 10 | 08/04/2025 | 23:02:47 | -70.01, 10.74 | 126.98 | 08/04/2025 | 23:02:26 | -70.00, 10.73 | 126.98 | 1.23 | 21 |
| 11 | 08/04/2025 | 23:53:14 | 69.02, 179.48 | 52.01 | 08/04/2025 | 23:52:08 | 69.05, 177.10 | 52.14 | 94.62 | 66 |
| 12 | 08/07/2025 | 14:28:59 | 70.06, -40.89 | 53.81 | 08/07/2025 | 14:29:25 | 70.05, -40.94 | 53.80 | 2.14 | 26 |
| 13 | 08/07/2025 | 15:19:41 | -69.93, 126.62 | 126.32 | 08/07/2025 | 15:18:55 | -69.96, 126.56 | 126.29 | 3.44 | 46 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/26/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/26/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9