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: 10/16/2025
| 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 | 10/17/2025 | 07:10:34 | 70.08, 68.70 | 79.35 | 10/17/2025 | 07:11:02 | 70.05, 68.68 | 79.32 | 3.06 | 28 |
| 2 | 10/17/2025 | 08:01:15 | -69.97,-123.82 | 100.75 | 10/17/2025 | 08:00:31 | -69.99,-123.77 | 100.74 | 2.89 | 44 |
| 3 | 10/19/2025 | 22:36:46 | -70.53, 16.48 | 99.25 | 10/19/2025 | 22:37:57 | -70.43, 17.47 | 99.35 | 38.37 | 71 |
| 4 | 10/19/2025 | 23:27:24 | 70.07,-175.50 | 80.31 | 10/19/2025 | 23:27:29 | 70.05,-175.44 | 80.28 | 3.20 | 5 |
| 5 | 10/20/2025 | 00:18:05 | -69.96, -8.01 | 99.80 | 10/20/2025 | 00:16:59 | -69.94, -7.96 | 99.82 | 3.26 | 66 |
| 6 | 10/22/2025 | 14:53:29 | -70.11, 132.93 | 98.73 | 10/22/2025 | 14:54:30 | -70.13, 132.92 | 98.70 | 2.67 | 61 |
| 7 | 10/22/2025 | 15:44:14 | 70.02, -59.63 | 81.20 | 10/22/2025 | 15:43:57 | 70.02, -59.59 | 81.20 | 1.33 | 17 |
| 8 | 10/22/2025 | 16:34:45 | -69.38, 108.64 | 99.43 | 10/22/2025 | 16:33:35 | -69.47, 107.29 | 99.34 | 53.77 | 70 |
| 9 | 10/25/2025 | 07:10:19 | -70.06,-111.20 | 97.84 | 10/25/2025 | 07:10:58 | -70.07,-111.27 | 97.83 | 3.09 | 39 |
| 10 | 10/25/2025 | 08:01:04 | 69.97, 56.23 | 82.09 | 10/25/2025 | 08:00:25 | 69.96, 56.22 | 82.08 | 1.65 | 39 |
| 11 | 10/27/2025 | 22:36:38 | 70.67,-163.69 | 83.67 | 10/27/2025 | 22:37:47 | 70.59,-162.26 | 83.59 | 53.48 | 69 |
| 12 | 10/27/2025 | 23:27:10 | -70.07, 4.57 | 96.92 | 10/27/2025 | 23:27:25 | -70.05, 4.58 | 96.95 | 3.05 | 15 |
| 13 | 10/28/2025 | 00:17:54 | 69.94, 172.07 | 82.97 | 10/28/2025 | 00:16:52 | 69.93, 172.06 | 82.95 | 1.39 | 62 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 10/16/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 10/16/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8