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: 4/14/2025
| 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 | 04/16/2025 | 06:19:37 | 70.25, 81.21 | 59.96 | 04/16/2025 | 06:20:48 | 70.22, 81.21 | 59.93 | 3.08 | 71 |
| 2 | 04/16/2025 | 07:10:19 | -70.13,-111.29 | 120.18 | 04/16/2025 | 07:10:18 | -70.11,-111.32 | 120.20 | 3.08 | 1 |
| 3 | 04/16/2025 | 08:00:59 | 69.84, 56.47 | 59.51 | 04/16/2025 | 07:59:47 | 69.89, 56.03 | 59.58 | 17.98 | 72 |
| 4 | 04/18/2025 | 22:36:26 | 70.17,-162.88 | 58.94 | 04/18/2025 | 22:37:15 | 70.19,-162.95 | 58.95 | 3.27 | 49 |
| 5 | 04/18/2025 | 23:27:09 | -70.11, 4.54 | 121.14 | 04/18/2025 | 23:26:45 | -70.08, 4.52 | 121.17 | 3.45 | 24 |
| 6 | 04/21/2025 | 14:53:16 | 70.16, -47.07 | 58.01 | 04/21/2025 | 14:53:41 | 70.17, -47.10 | 58.01 | 1.07 | 25 |
| 7 | 04/21/2025 | 15:43:58 | -70.04, 120.43 | 122.13 | 04/21/2025 | 15:43:11 | -70.05, 120.38 | 122.11 | 2.63 | 47 |
| 8 | 04/24/2025 | 06:19:26 | -70.45, -99.04 | 122.58 | 04/24/2025 | 06:20:37 | -70.38, -98.55 | 122.67 | 19.90 | 71 |
| 9 | 04/24/2025 | 07:10:06 | 70.16, 68.72 | 57.12 | 04/24/2025 | 07:10:06 | 70.15, 68.78 | 57.11 | 2.48 | 0 |
| 10 | 04/24/2025 | 08:00:48 | -70.04,-123.78 | 123.02 | 04/24/2025 | 07:59:36 | -70.04,-123.74 | 123.02 | 1.30 | 72 |
| 11 | 04/26/2025 | 22:36:10 | -70.20, 17.15 | 123.71 | 04/26/2025 | 22:37:03 | -70.21, 17.11 | 123.70 | 2.10 | 53 |
| 12 | 04/26/2025 | 23:26:54 | 70.13,-175.43 | 56.21 | 04/26/2025 | 23:26:30 | 70.10,-175.41 | 56.18 | 3.22 | 24 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/14/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 04/14/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8