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: 8/29/2025
| 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 | 08/30/2025 | 07:10:04 | -70.02,-111.30 | 118.92 | 08/30/2025 | 07:10:55 | -70.03,-111.31 | 118.91 | 1.77 | 51 |
| 2 | 08/30/2025 | 08:00:48 | 69.91, 56.18 | 60.98 | 08/30/2025 | 08:00:23 | 69.89, 56.13 | 60.97 | 2.68 | 25 |
| 3 | 08/30/2025 | 08:51:14 | -68.96,-135.15 | 119.98 | 08/30/2025 | 08:50:07 | -68.99,-137.43 | 119.88 | 90.94 | 67 |
| 4 | 09/01/2025 | 23:26:57 | -70.01, 4.49 | 117.96 | 09/01/2025 | 23:27:25 | -70.02, 4.54 | 117.96 | 2.17 | 28 |
| 5 | 09/02/2025 | 00:17:40 | 69.85, 172.04 | 61.89 | 09/02/2025 | 00:16:53 | 69.87, 171.98 | 61.91 | 3.18 | 47 |
| 6 | 09/04/2025 | 14:53:13 | 70.32, -47.53 | 63.33 | 09/04/2025 | 14:54:24 | 70.20, -46.94 | 63.19 | 25.50 | 71 |
| 7 | 09/04/2025 | 15:43:50 | -69.95, 120.36 | 117.04 | 09/04/2025 | 15:43:56 | -69.97, 120.36 | 117.02 | 2.23 | 6 |
| 8 | 09/04/2025 | 16:34:34 | 69.85, -72.18 | 62.87 | 09/04/2025 | 16:33:24 | 69.82, -72.20 | 62.85 | 3.20 | 70 |
| 9 | 09/07/2025 | 07:10:01 | 70.01, 68.73 | 64.00 | 09/07/2025 | 07:10:57 | 70.02, 68.68 | 64.01 | 2.18 | 56 |
| 10 | 09/07/2025 | 08:00:43 | -69.90,-123.79 | 116.10 | 09/07/2025 | 08:00:27 | -69.90,-123.86 | 116.10 | 2.48 | 16 |
| 11 | 09/07/2025 | 08:51:14 | 69.12, 44.66 | 63.11 | 09/07/2025 | 08:50:06 | 69.14, 42.76 | 63.18 | 75.11 | 68 |
| 12 | 09/09/2025 | 23:26:54 | 69.97,-175.43 | 64.97 | 09/09/2025 | 23:27:27 | 69.98,-175.50 | 64.97 | 2.59 | 33 |
| 13 | 09/10/2025 | 00:17:37 | -69.91, -8.03 | 115.08 | 09/10/2025 | 00:16:56 | -69.91, -7.96 | 115.09 | 2.72 | 41 |
| 14 | 09/12/2025 | 14:53:11 | -70.50, 132.22 | 113.49 | 09/12/2025 | 14:54:22 | -70.39, 133.33 | 113.63 | 43.44 | 71 |
| 15 | 09/12/2025 | 15:43:46 | 69.94, -59.60 | 65.95 | 09/12/2025 | 15:43:55 | 69.96, -59.64 | 65.97 | 2.34 | 9 |
| 16 | 09/12/2025 | 16:34:28 | -69.83, 107.89 | 114.16 | 09/12/2025 | 16:33:25 | -69.84, 107.83 | 114.14 | 2.83 | 63 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/29/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 08/29/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9