Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-8 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/18/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-8) | Time (LANDSAT-8) | Lat,Lon (LANDSAT-8) | SZA (LANDSAT-8 ) | Distance(km) | Time Diff (sec) |
| 1 | 04/18/2025 | 22:36:26 | 70.18,-162.89 | 58.95 | 04/18/2025 | 22:37:15 | 70.18,-162.97 | 58.94 | 2.77 | 49 |
| 2 | 04/18/2025 | 23:27:09 | -70.12, 4.52 | 121.13 | 04/18/2025 | 23:26:44 | -70.12, 4.58 | 121.14 | 2.18 | 25 |
| 3 | 04/21/2025 | 14:53:16 | 70.17, -47.09 | 58.02 | 04/21/2025 | 14:53:41 | 70.17, -47.10 | 58.01 | 0.64 | 25 |
| 4 | 04/21/2025 | 15:43:58 | -70.05, 120.41 | 122.12 | 04/21/2025 | 15:43:11 | -70.05, 120.37 | 122.12 | 1.54 | 47 |
| 5 | 04/24/2025 | 06:19:26 | -70.46, -99.06 | 122.57 | 04/24/2025 | 06:20:37 | -70.39, -98.53 | 122.66 | 21.12 | 71 |
| 6 | 04/24/2025 | 07:10:05 | 70.12, 68.79 | 57.07 | 04/24/2025 | 07:10:07 | 70.12, 68.72 | 57.07 | 2.48 | 2 |
| 7 | 04/24/2025 | 08:00:48 | -70.05,-123.80 | 123.01 | 04/24/2025 | 07:59:36 | -70.06,-123.73 | 123.00 | 2.62 | 72 |
| 8 | 04/26/2025 | 22:36:11 | -70.21, 17.13 | 123.69 | 04/26/2025 | 22:37:05 | -70.19, 17.08 | 123.72 | 2.64 | 54 |
| 9 | 04/26/2025 | 23:26:54 | 70.08,-175.36 | 56.16 | 04/26/2025 | 23:26:32 | 70.08,-175.43 | 56.17 | 2.80 | 22 |
| 10 | 04/27/2025 | 00:17:22 | -69.22, -6.78 | 124.74 | 04/27/2025 | 00:16:15 | -69.26, -8.93 | 124.65 | 84.58 | 67 |
| 11 | 04/29/2025 | 14:52:59 | -70.18, 132.96 | 124.56 | 04/29/2025 | 14:53:28 | -70.18, 132.95 | 124.57 | 0.53 | 29 |
| 12 | 04/29/2025 | 15:43:42 | 70.05, -59.53 | 55.30 | 04/29/2025 | 15:42:55 | 70.07, -59.56 | 55.31 | 2.02 | 47 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/18/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 04/18/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8