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: 8/23/2025
| 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 | 08/24/2025 | 22:36:35 | -71.01, 15.54 | 119.74 | 08/24/2025 | 22:37:41 | -70.93, 18.25 | 119.91 | 98.88 | 66 |
| 2 | 08/24/2025 | 23:27:01 | 69.96,-175.46 | 59.16 | 08/24/2025 | 23:27:24 | 69.96,-175.54 | 59.16 | 2.93 | 23 |
| 3 | 08/25/2025 | 00:17:43 | -69.87, -8.01 | 120.92 | 08/25/2025 | 00:16:53 | -69.90, -7.99 | 120.89 | 3.32 | 50 |
| 4 | 08/27/2025 | 14:53:12 | -70.16, 132.71 | 119.72 | 08/27/2025 | 14:54:24 | -70.12, 132.93 | 119.77 | 9.26 | 72 |
| 5 | 08/27/2025 | 15:43:54 | 69.94, -59.66 | 60.07 | 08/27/2025 | 15:43:52 | 69.97, -59.64 | 60.10 | 2.84 | 2 |
| 6 | 08/27/2025 | 16:34:36 | -69.85, 107.80 | 120.02 | 08/27/2025 | 16:33:22 | -69.85, 107.83 | 120.00 | 1.28 | 74 |
| 7 | 08/30/2025 | 07:10:04 | -70.03,-111.32 | 118.90 | 08/30/2025 | 07:10:55 | -70.01,-111.35 | 118.93 | 2.92 | 51 |
| 8 | 08/30/2025 | 08:00:48 | 69.93, 56.14 | 61.01 | 08/30/2025 | 08:00:22 | 69.90, 56.15 | 60.98 | 2.90 | 26 |
| 9 | 08/30/2025 | 08:51:13 | -68.93,-135.10 | 120.02 | 08/30/2025 | 08:50:06 | -69.02,-137.40 | 119.86 | 92.29 | 67 |
| 10 | 09/01/2025 | 22:36:33 | 71.01,-164.44 | 63.08 | 09/01/2025 | 22:37:39 | 70.91,-161.75 | 62.91 | 98.16 | 66 |
| 11 | 09/01/2025 | 23:26:57 | -69.96, 4.56 | 118.01 | 09/01/2025 | 23:27:24 | -69.98, 4.50 | 117.99 | 2.99 | 27 |
| 12 | 09/02/2025 | 00:17:41 | 69.86, 172.02 | 61.90 | 09/02/2025 | 00:16:51 | 69.87, 172.00 | 61.92 | 1.36 | 50 |
| 13 | 09/04/2025 | 14:53:11 | 70.17, -47.29 | 63.17 | 09/04/2025 | 14:54:22 | 70.10, -47.07 | 63.10 | 11.10 | 71 |
| 14 | 09/04/2025 | 15:43:51 | -69.95, 120.35 | 117.04 | 09/04/2025 | 15:43:53 | -69.94, 120.34 | 117.05 | 1.20 | 2 |
| 15 | 09/04/2025 | 16:34:33 | 69.75, -72.04 | 62.77 | 09/04/2025 | 16:33:21 | 69.78, -72.25 | 62.80 | 8.64 | 72 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/23/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 08/23/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9