Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-20 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/26/2025
| Index | Date (NOAA-20) | Time (NOAA-20) | Lat,Lon (NOAA-20) | SZA (NOAA-20 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 07/26/2025 | 14:53:14 | -70.04, 132.82 | 129.24 | 07/26/2025 | 14:54:11 | -70.02, 132.80 | 129.28 | 2.51 | 57 |
| 2 | 07/26/2025 | 15:43:58 | 69.90, -59.66 | 50.62 | 07/26/2025 | 15:43:38 | 69.91, -59.70 | 50.64 | 2.13 | 20 |
| 3 | 07/26/2025 | 16:34:27 | -69.14, 108.75 | 130.17 | 07/26/2025 | 16:33:19 | -69.20, 106.96 | 130.03 | 70.97 | 68 |
| 4 | 07/29/2025 | 07:10:09 | -70.02,-111.37 | 128.65 | 07/29/2025 | 07:10:41 | -69.99,-111.35 | 128.68 | 2.89 | 32 |
| 5 | 07/29/2025 | 08:00:53 | 69.88, 56.14 | 51.22 | 07/29/2025 | 08:00:08 | 69.88, 56.14 | 51.23 | 0.13 | 45 |
| 6 | 07/31/2025 | 22:36:27 | 70.34,-163.41 | 52.34 | 07/31/2025 | 22:37:38 | 70.21,-162.79 | 52.18 | 27.37 | 71 |
| 7 | 07/31/2025 | 23:27:03 | -69.95, 4.51 | 128.07 | 07/31/2025 | 23:27:11 | -69.94, 4.46 | 128.07 | 1.72 | 8 |
| 8 | 08/01/2025 | 00:17:47 | 69.82, 172.01 | 51.81 | 08/01/2025 | 00:16:38 | 69.83, 171.95 | 51.83 | 2.99 | 69 |
| 9 | 08/03/2025 | 14:53:16 | 70.01, -47.14 | 52.68 | 08/03/2025 | 14:54:10 | 70.03, -47.16 | 52.70 | 2.42 | 54 |
| 10 | 08/03/2025 | 15:43:58 | -69.93, 120.30 | 127.39 | 08/03/2025 | 15:43:40 | -69.93, 120.33 | 127.40 | 1.13 | 18 |
| 11 | 08/03/2025 | 16:34:28 | 69.06, -71.13 | 51.71 | 08/03/2025 | 16:33:20 | 69.10, -73.15 | 51.83 | 80.20 | 68 |
| 12 | 08/06/2025 | 07:10:10 | 70.01, 68.65 | 53.40 | 08/06/2025 | 07:10:38 | 70.00, 68.68 | 53.38 | 1.80 | 28 |
| 13 | 08/06/2025 | 08:00:51 | -69.87,-123.83 | 126.74 | 08/06/2025 | 08:00:08 | -69.90,-123.83 | 126.70 | 3.12 | 43 |
| 14 | 08/08/2025 | 22:36:25 | -70.34, 16.61 | 125.52 | 08/08/2025 | 22:37:37 | -70.23, 17.25 | 125.66 | 26.95 | 72 |
| 15 | 08/08/2025 | 23:27:04 | 69.96,-175.50 | 54.10 | 08/08/2025 | 23:27:07 | 69.94,-175.51 | 54.08 | 1.58 | 3 |
| 16 | 08/09/2025 | 00:17:46 | -69.87, -8.05 | 125.99 | 08/09/2025 | 00:16:37 | -69.85, -8.01 | 126.00 | 2.76 | 69 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/26/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 07/26/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9