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: 5/15/2025
| 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 | 05/15/2025 | 14:52:27 | 71.01, -48.56 | 51.95 | 05/15/2025 | 14:53:33 | 70.92, -45.97 | 51.81 | 94.48 | 66 |
| 2 | 05/15/2025 | 15:42:52 | -70.01, 120.36 | 129.10 | 05/15/2025 | 15:43:17 | -70.04, 120.35 | 129.08 | 3.55 | 25 |
| 3 | 05/15/2025 | 16:33:36 | 69.90, -72.18 | 50.79 | 05/15/2025 | 16:32:45 | 69.88, -72.22 | 50.77 | 2.91 | 51 |
| 4 | 05/18/2025 | 07:09:06 | 70.06, 68.73 | 50.36 | 05/18/2025 | 07:10:14 | 70.07, 68.66 | 50.37 | 3.39 | 68 |
| 5 | 05/18/2025 | 07:59:49 | -70.00,-123.86 | 129.71 | 05/18/2025 | 07:59:43 | -70.01,-123.80 | 129.70 | 2.94 | 6 |
| 6 | 05/18/2025 | 08:50:27 | 69.58, 44.06 | 49.85 | 05/18/2025 | 08:49:15 | 69.63, 43.32 | 49.92 | 29.20 | 72 |
| 7 | 05/20/2025 | 23:26:02 | 70.06,-175.50 | 49.80 | 05/20/2025 | 23:26:38 | 70.08,-175.45 | 49.81 | 3.16 | 36 |
| 8 | 05/21/2025 | 00:16:44 | -69.94, -8.01 | 130.33 | 05/21/2025 | 00:16:08 | -69.96, -7.97 | 130.31 | 2.76 | 36 |
| 9 | 05/23/2025 | 14:52:21 | -70.47, 132.31 | 130.30 | 05/23/2025 | 14:53:32 | -70.39, 133.25 | 130.40 | 35.89 | 71 |
| 10 | 05/23/2025 | 15:42:58 | 70.01, -59.67 | 49.23 | 05/23/2025 | 15:43:04 | 70.01, -59.66 | 49.22 | 0.66 | 6 |
| 11 | 05/23/2025 | 16:33:40 | -69.89, 107.83 | 130.91 | 05/23/2025 | 16:32:34 | -69.89, 107.82 | 130.90 | 0.38 | 66 |
| 12 | 05/26/2025 | 07:09:10 | -70.06,-111.28 | 131.20 | 05/26/2025 | 07:10:02 | -70.08,-111.31 | 131.18 | 2.77 | 52 |
| 13 | 05/26/2025 | 07:59:54 | 69.97, 56.17 | 48.71 | 05/26/2025 | 07:59:29 | 69.97, 56.18 | 48.70 | 0.68 | 25 |
| 14 | 05/26/2025 | 08:50:20 | -69.00,-135.12 | 132.30 | 05/26/2025 | 08:49:13 | -69.08,-137.37 | 132.16 | 89.93 | 67 |
| 15 | 05/28/2025 | 22:35:38 | 70.88,-164.13 | 49.23 | 05/28/2025 | 22:36:45 | 70.79,-162.00 | 49.08 | 78.45 | 67 |
| 16 | 05/28/2025 | 23:26:06 | -70.02, 4.55 | 131.68 | 05/28/2025 | 23:26:27 | -70.02, 4.51 | 131.67 | 1.65 | 21 |
| 17 | 05/29/2025 | 00:16:50 | 69.93, 171.99 | 48.23 | 05/29/2025 | 00:15:54 | 69.91, 171.99 | 48.21 | 3.02 | 56 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/15/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 05/15/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9