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: 11/27/2025
| 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 | 11/28/2025 | 22:37:01 | 70.15,-162.98 | 91.51 | 11/28/2025 | 22:38:04 | 70.13,-162.98 | 91.50 | 1.66 | 63 |
| 2 | 11/28/2025 | 23:27:43 | -70.04, 4.49 | 88.59 | 11/28/2025 | 23:27:34 | -70.02, 4.50 | 88.61 | 2.55 | 9 |
| 3 | 11/29/2025 | 00:18:18 | 69.46, 172.67 | 90.83 | 11/29/2025 | 00:17:08 | 69.53, 171.46 | 90.91 | 47.83 | 70 |
| 4 | 12/01/2025 | 14:53:59 | 70.09, -47.14 | 91.89 | 12/01/2025 | 14:54:31 | 70.12, -47.12 | 91.91 | 3.01 | 32 |
| 5 | 12/01/2025 | 15:44:41 | -69.98, 120.34 | 88.22 | 12/01/2025 | 15:44:01 | -70.01, 120.36 | 88.20 | 3.09 | 40 |
| 6 | 12/04/2025 | 06:20:19 | -70.40, -99.18 | 87.43 | 12/04/2025 | 06:21:30 | -70.30, -98.62 | 87.54 | 23.94 | 71 |
| 7 | 12/04/2025 | 07:10:58 | 70.05, 68.69 | 92.22 | 12/04/2025 | 07:11:00 | 70.02, 68.63 | 92.20 | 3.23 | 2 |
| 8 | 12/04/2025 | 08:01:40 | -69.93,-123.82 | 87.90 | 12/04/2025 | 08:00:30 | -69.92,-123.88 | 87.91 | 2.80 | 70 |
| 9 | 12/06/2025 | 22:37:14 | -70.15, 16.98 | 87.36 | 12/06/2025 | 22:38:00 | -70.12, 17.02 | 87.38 | 2.93 | 46 |
| 10 | 12/06/2025 | 23:27:57 | 70.01,-175.50 | 92.51 | 12/06/2025 | 23:27:27 | 70.01,-175.49 | 92.51 | 0.59 | 30 |
| 11 | 12/09/2025 | 14:03:40 | 70.71, -35.48 | 93.50 | 12/09/2025 | 14:04:49 | 70.63, -33.98 | 93.40 | 56.03 | 69 |
| 12 | 12/09/2025 | 14:54:13 | -70.11, 132.79 | 87.12 | 12/09/2025 | 14:54:27 | -70.09, 132.86 | 87.14 | 3.42 | 14 |
| 13 | 12/09/2025 | 15:44:56 | 69.97, -59.69 | 92.75 | 12/09/2025 | 15:43:54 | 69.97, -59.65 | 92.75 | 1.36 | 62 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 11/27/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 11/27/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8