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: 9/17/2025
| 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 | 09/17/2025 | 23:26:48 | -70.04, 4.50 | 111.91 | 09/17/2025 | 23:27:29 | -70.03, 4.56 | 111.93 | 2.48 | 41 |
| 2 | 09/18/2025 | 00:17:31 | 69.89, 172.04 | 67.95 | 09/18/2025 | 00:16:57 | 69.88, 171.99 | 67.94 | 2.60 | 34 |
| 3 | 09/20/2025 | 14:53:10 | 70.72, -48.09 | 69.81 | 09/20/2025 | 14:54:18 | 70.66, -46.27 | 69.72 | 67.38 | 68 |
| 4 | 09/20/2025 | 15:43:40 | -69.98, 120.39 | 110.94 | 09/20/2025 | 15:43:58 | -70.00, 120.40 | 110.92 | 2.42 | 18 |
| 5 | 09/20/2025 | 16:34:24 | 69.88, -72.16 | 68.98 | 09/20/2025 | 16:33:25 | 69.90, -72.10 | 68.99 | 2.76 | 59 |
| 6 | 09/23/2025 | 07:09:51 | 70.08, 68.70 | 70.19 | 09/23/2025 | 07:10:57 | 70.06, 68.74 | 70.17 | 2.57 | 66 |
| 7 | 09/23/2025 | 08:00:33 | -69.97,-123.82 | 109.91 | 09/23/2025 | 08:00:27 | -69.95,-123.79 | 109.94 | 2.59 | 6 |
| 8 | 09/23/2025 | 08:51:10 | 69.50, 44.18 | 69.63 | 09/23/2025 | 08:49:59 | 69.57, 43.33 | 69.71 | 33.77 | 71 |
| 9 | 09/25/2025 | 23:26:42 | 70.03,-175.44 | 71.18 | 09/25/2025 | 23:27:24 | 70.04,-175.40 | 71.19 | 2.29 | 42 |
| 10 | 09/26/2025 | 00:17:24 | -69.91, -7.95 | 108.93 | 09/26/2025 | 00:16:54 | -69.94, -7.92 | 108.91 | 2.60 | 30 |
| 11 | 09/28/2025 | 14:53:06 | -70.91, 131.64 | 106.90 | 09/28/2025 | 14:54:13 | -70.78, 133.92 | 107.06 | 84.75 | 67 |
| 12 | 09/28/2025 | 15:43:34 | 69.98, -59.58 | 72.17 | 09/28/2025 | 15:43:52 | 70.01, -59.56 | 72.20 | 3.36 | 18 |
| 13 | 09/28/2025 | 16:34:16 | -69.87, 107.91 | 107.94 | 09/28/2025 | 16:33:23 | -69.85, 107.85 | 107.95 | 2.86 | 53 |
| 14 | 10/01/2025 | 07:09:43 | -70.08,-111.25 | 106.71 | 10/01/2025 | 07:10:53 | -70.07,-111.22 | 106.72 | 1.17 | 70 |
| 15 | 10/01/2025 | 08:00:26 | 69.94, 56.27 | 73.17 | 10/01/2025 | 08:00:20 | 69.96, 56.26 | 73.18 | 2.20 | 6 |
| 16 | 10/01/2025 | 08:51:05 | -69.66,-136.00 | 107.10 | 10/01/2025 | 08:49:52 | -69.75,-136.40 | 107.02 | 17.81 | 73 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/17/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 09/17/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9