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: 9/20/2025
| 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 | 09/20/2025 | 14:53:12 | 70.83, -48.29 | 69.93 | 09/20/2025 | 14:54:19 | 70.71, -46.21 | 69.77 | 77.38 | 67 |
| 2 | 09/20/2025 | 15:43:40 | -69.99, 120.36 | 110.93 | 09/20/2025 | 15:44:00 | -69.99, 120.37 | 110.93 | 0.54 | 20 |
| 3 | 09/20/2025 | 16:34:24 | 69.89, -72.18 | 68.99 | 09/20/2025 | 16:33:27 | 69.89, -72.12 | 68.99 | 2.21 | 57 |
| 4 | 09/23/2025 | 07:09:50 | 70.04, 68.76 | 70.15 | 09/23/2025 | 07:11:02 | 70.04, 68.68 | 70.15 | 2.90 | 72 |
| 5 | 09/23/2025 | 08:00:32 | -69.93,-123.76 | 109.95 | 09/23/2025 | 08:00:32 | -69.93,-123.84 | 109.96 | 3.00 | 0 |
| 6 | 09/23/2025 | 08:51:13 | 69.68, 43.93 | 69.81 | 09/23/2025 | 08:50:01 | 69.71, 43.51 | 69.85 | 16.66 | 72 |
| 7 | 09/25/2025 | 23:26:43 | 70.04,-175.46 | 71.19 | 09/25/2025 | 23:27:32 | 70.06,-175.41 | 71.21 | 3.01 | 49 |
| 8 | 09/26/2025 | 00:17:25 | -69.93, -7.97 | 108.91 | 09/26/2025 | 00:17:02 | -69.95, -7.93 | 108.89 | 3.18 | 23 |
| 9 | 09/26/2025 | 01:07:51 | 68.88, 160.84 | 70.04 | 09/26/2025 | 01:06:45 | 68.96, 158.39 | 70.15 | 98.53 | 66 |
| 10 | 09/28/2025 | 15:43:34 | 69.99, -59.60 | 72.18 | 09/28/2025 | 15:44:02 | 70.01, -59.60 | 72.20 | 1.70 | 28 |
| 11 | 09/28/2025 | 16:34:16 | -69.88, 107.88 | 107.92 | 09/28/2025 | 16:33:32 | -69.91, 107.88 | 107.90 | 2.52 | 44 |
| 12 | 10/01/2025 | 07:09:50 | -70.46,-111.85 | 106.32 | 10/01/2025 | 07:11:01 | -70.32,-110.92 | 106.47 | 38.10 | 71 |
| 13 | 10/01/2025 | 08:00:26 | 69.95, 56.25 | 73.18 | 10/01/2025 | 08:00:33 | 69.94, 56.17 | 73.16 | 3.38 | 7 |
| 14 | 10/01/2025 | 08:51:08 | -69.84,-136.26 | 106.93 | 10/01/2025 | 08:50:03 | -69.83,-136.33 | 106.93 | 2.73 | 65 |
| 15 | 10/03/2025 | 23:26:35 | -70.06, 4.57 | 105.70 | 10/03/2025 | 23:27:35 | -70.07, 4.59 | 105.69 | 1.62 | 60 |
| 16 | 10/04/2025 | 00:17:19 | 69.97, 172.01 | 74.23 | 10/04/2025 | 00:17:02 | 69.95, 172.08 | 74.21 | 3.22 | 17 |
| 17 | 10/04/2025 | 01:07:51 | -69.33, -19.73 | 106.41 | 10/04/2025 | 01:06:41 | -69.36, -21.10 | 106.37 | 53.95 | 70 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/20/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 09/20/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9