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: 4/19/2025
| 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 | 04/21/2025 | 14:53:16 | 70.17, -47.09 | 58.02 | 04/21/2025 | 14:53:41 | 70.16, -47.10 | 58.01 | 1.34 | 25 |
| 2 | 04/21/2025 | 15:43:58 | -70.05, 120.41 | 122.12 | 04/21/2025 | 15:43:11 | -70.04, 120.36 | 122.12 | 2.19 | 47 |
| 3 | 04/24/2025 | 06:19:26 | -70.46, -99.05 | 122.57 | 04/24/2025 | 06:20:37 | -70.38, -98.55 | 122.67 | 20.92 | 71 |
| 4 | 04/24/2025 | 07:10:06 | 70.17, 68.71 | 57.13 | 04/24/2025 | 07:10:06 | 70.16, 68.79 | 57.12 | 3.09 | 0 |
| 5 | 04/24/2025 | 08:00:48 | -70.05,-123.79 | 123.01 | 04/24/2025 | 07:59:36 | -70.05,-123.74 | 123.01 | 2.00 | 72 |
| 6 | 04/26/2025 | 22:36:11 | -70.20, 17.14 | 123.70 | 04/26/2025 | 22:37:05 | -70.18, 17.06 | 123.73 | 3.64 | 54 |
| 7 | 04/26/2025 | 23:26:55 | 70.13,-175.43 | 56.21 | 04/26/2025 | 23:26:31 | 70.13,-175.37 | 56.21 | 2.45 | 24 |
| 8 | 04/27/2025 | 00:17:22 | -69.21, -6.78 | 124.74 | 04/27/2025 | 00:16:15 | -69.25, -8.94 | 124.66 | 85.38 | 67 |
| 9 | 04/29/2025 | 14:52:59 | -70.17, 132.98 | 124.57 | 04/29/2025 | 14:53:28 | -70.17, 132.94 | 124.58 | 1.62 | 29 |
| 10 | 04/29/2025 | 15:43:42 | 70.04, -59.51 | 55.28 | 04/29/2025 | 15:42:55 | 70.06, -59.58 | 55.30 | 2.87 | 47 |
| 11 | 05/02/2025 | 06:19:09 | 70.43, 81.05 | 54.90 | 05/02/2025 | 06:20:20 | 70.33, 81.44 | 54.78 | 18.13 | 71 |
| 12 | 05/02/2025 | 07:09:48 | -70.15,-111.20 | 125.41 | 05/02/2025 | 07:09:51 | -70.17,-111.16 | 125.39 | 2.28 | 3 |
| 13 | 05/02/2025 | 08:00:31 | 70.02, 56.31 | 54.45 | 05/02/2025 | 07:59:18 | 70.05, 56.32 | 54.49 | 3.53 | 73 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/19/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 04/19/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8