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: 11/30/2025
| 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 | 12/01/2025 | 14:53:59 | 70.08, -47.12 | 91.87 | 12/01/2025 | 14:54:32 | 70.08, -47.17 | 91.87 | 2.22 | 33 |
| 2 | 12/01/2025 | 15:44:41 | -69.97, 120.36 | 88.24 | 12/01/2025 | 15:44:02 | -69.96, 120.30 | 88.24 | 2.50 | 39 |
| 3 | 12/04/2025 | 06:20:19 | -70.39, -99.15 | 87.44 | 12/04/2025 | 06:21:30 | -70.31, -98.60 | 87.53 | 22.36 | 71 |
| 4 | 12/04/2025 | 07:10:58 | 70.02, 68.72 | 92.20 | 12/04/2025 | 07:11:00 | 70.04, 68.66 | 92.21 | 2.76 | 2 |
| 5 | 12/04/2025 | 08:01:40 | -69.91,-123.80 | 87.92 | 12/04/2025 | 08:00:30 | -69.93,-123.87 | 87.90 | 3.21 | 70 |
| 6 | 12/06/2025 | 22:37:14 | -70.13, 17.01 | 87.38 | 12/06/2025 | 22:38:00 | -70.14, 17.04 | 87.37 | 1.69 | 46 |
| 7 | 12/06/2025 | 23:27:58 | 70.03,-175.54 | 92.54 | 12/06/2025 | 23:27:27 | 70.03,-175.47 | 92.53 | 2.74 | 31 |
| 8 | 12/09/2025 | 14:03:40 | 70.73, -35.52 | 93.52 | 12/09/2025 | 14:04:49 | 70.60, -34.03 | 93.37 | 56.86 | 69 |
| 9 | 12/09/2025 | 14:54:12 | -70.08, 132.83 | 87.14 | 12/09/2025 | 14:54:26 | -70.11, 132.88 | 87.12 | 3.24 | 14 |
| 10 | 12/09/2025 | 15:44:55 | 69.94, -59.65 | 92.72 | 12/09/2025 | 15:43:54 | 69.94, -59.71 | 92.72 | 2.33 | 61 |
| 11 | 12/12/2025 | 06:20:28 | 70.12, 81.21 | 93.13 | 12/12/2025 | 06:21:23 | 70.16, 81.21 | 93.15 | 3.42 | 55 |
| 12 | 12/12/2025 | 07:11:11 | -70.05,-111.36 | 86.96 | 12/12/2025 | 07:10:53 | -70.05,-111.30 | 86.95 | 2.05 | 18 |
| 13 | 12/12/2025 | 08:01:40 | 69.17, 57.24 | 92.16 | 12/12/2025 | 08:00:33 | 69.22, 55.21 | 92.23 | 80.34 | 67 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 11/30/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 11/30/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8