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: 9/5/2025
| 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 | 09/07/2025 | 06:20:26 | 70.11, 81.18 | 64.09 | 09/07/2025 | 06:21:25 | 70.14, 81.19 | 64.11 | 2.66 | 59 |
| 2 | 09/07/2025 | 07:11:08 | -70.01,-111.35 | 116.01 | 09/07/2025 | 07:10:55 | -70.02,-111.34 | 116.00 | 1.14 | 13 |
| 3 | 09/07/2025 | 08:01:41 | 69.32, 56.97 | 63.30 | 09/07/2025 | 08:00:32 | 69.37, 55.41 | 63.38 | 61.46 | 69 |
| 4 | 09/09/2025 | 22:37:19 | 70.07,-162.97 | 65.05 | 09/09/2025 | 22:37:55 | 70.07,-163.02 | 65.05 | 1.80 | 36 |
| 5 | 09/09/2025 | 23:28:01 | -69.97, 4.49 | 115.05 | 09/09/2025 | 23:27:25 | -69.96, 4.46 | 115.05 | 1.49 | 36 |
| 6 | 09/12/2025 | 14:03:39 | -70.71, 144.47 | 113.29 | 09/12/2025 | 14:04:48 | -70.63, 146.04 | 113.40 | 58.47 | 69 |
| 7 | 09/12/2025 | 14:54:12 | 70.03, -47.14 | 66.02 | 09/12/2025 | 14:54:24 | 70.03, -47.19 | 66.03 | 1.78 | 12 |
| 8 | 09/12/2025 | 15:44:54 | -69.93, 120.32 | 114.07 | 09/12/2025 | 15:43:54 | -69.93, 120.29 | 114.07 | 1.35 | 60 |
| 9 | 09/15/2025 | 06:20:20 | -70.11, -98.79 | 112.89 | 09/15/2025 | 06:21:24 | -70.13, -98.81 | 112.87 | 2.43 | 64 |
| 10 | 09/15/2025 | 07:11:04 | 70.00, 68.68 | 67.02 | 09/15/2025 | 07:10:51 | 70.02, 68.68 | 67.04 | 1.92 | 13 |
| 11 | 09/15/2025 | 08:01:38 | -69.48,-123.24 | 113.50 | 09/15/2025 | 08:00:27 | -69.58,-124.29 | 113.38 | 42.41 | 71 |
| 12 | 09/17/2025 | 22:37:13 | -70.09, 17.01 | 111.88 | 09/17/2025 | 22:37:52 | -70.09, 17.02 | 111.88 | 0.56 | 39 |
| 13 | 09/17/2025 | 23:27:57 | 69.98,-175.51 | 68.03 | 09/17/2025 | 23:27:19 | 69.97,-175.49 | 68.02 | 1.29 | 38 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/5/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/05/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8