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: 9/13/2025
| 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 | 09/15/2025 | 06:20:21 | -70.12, -98.82 | 112.88 | 09/15/2025 | 06:21:30 | -70.13, -98.84 | 112.87 | 1.09 | 69 |
| 2 | 09/15/2025 | 07:11:05 | 70.01, 68.67 | 67.02 | 09/15/2025 | 07:10:57 | 70.03, 68.67 | 67.05 | 2.60 | 8 |
| 3 | 09/15/2025 | 08:01:43 | -69.71,-123.57 | 113.27 | 09/15/2025 | 08:00:30 | -69.75,-124.09 | 113.22 | 20.64 | 73 |
| 4 | 09/17/2025 | 22:37:14 | -70.09, 17.01 | 111.88 | 09/17/2025 | 22:38:01 | -70.12, 17.03 | 111.85 | 3.37 | 47 |
| 5 | 09/17/2025 | 23:27:58 | 69.97,-175.50 | 68.02 | 09/17/2025 | 23:27:29 | 69.96,-175.55 | 68.01 | 2.29 | 29 |
| 6 | 09/20/2025 | 14:03:41 | 71.04, -36.06 | 70.13 | 09/20/2025 | 14:04:47 | 70.97, -33.46 | 70.02 | 94.45 | 66 |
| 7 | 09/20/2025 | 14:54:06 | -70.07, 132.83 | 110.87 | 09/20/2025 | 14:54:32 | -70.04, 132.79 | 110.89 | 2.78 | 26 |
| 8 | 09/20/2025 | 15:44:50 | 69.95, -59.68 | 69.03 | 09/20/2025 | 15:43:59 | 69.94, -59.71 | 69.02 | 1.64 | 51 |
| 9 | 09/23/2025 | 06:20:20 | 70.29, 80.95 | 70.39 | 09/23/2025 | 06:21:31 | 70.22, 81.29 | 70.31 | 14.68 | 71 |
| 10 | 09/23/2025 | 07:10:59 | -70.04,-111.36 | 109.85 | 09/23/2025 | 07:11:02 | -70.06,-111.31 | 109.84 | 2.77 | 3 |
| 11 | 09/23/2025 | 08:01:43 | 69.92, 56.13 | 70.04 | 09/23/2025 | 08:00:30 | 69.90, 56.11 | 70.02 | 3.28 | 73 |
| 12 | 09/25/2025 | 22:37:10 | 70.11,-163.00 | 71.25 | 09/25/2025 | 22:38:03 | 70.11,-162.99 | 71.24 | 0.28 | 53 |
| 13 | 09/25/2025 | 23:27:52 | -70.03, 4.45 | 108.83 | 09/25/2025 | 23:27:33 | -70.01, 4.50 | 108.85 | 2.86 | 19 |
| 14 | 09/26/2025 | 00:18:21 | 69.11, 173.09 | 70.26 | 09/26/2025 | 00:17:14 | 69.12, 170.94 | 70.29 | 85.09 | 67 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/13/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/13/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8