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: 11/5/2025
| 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 | 11/07/2025 | 14:53:18 | -70.61, 132.23 | 93.03 | 11/07/2025 | 14:54:28 | -70.48, 133.41 | 93.16 | 46.07 | 70 |
| 2 | 11/07/2025 | 15:43:54 | 70.05, -59.58 | 86.42 | 11/07/2025 | 15:44:01 | 70.05, -59.57 | 86.42 | 0.37 | 7 |
| 3 | 11/07/2025 | 16:34:35 | -69.93, 107.93 | 93.70 | 11/07/2025 | 16:33:31 | -69.94, 107.91 | 93.69 | 1.66 | 64 |
| 4 | 11/10/2025 | 07:10:10 | -70.10,-111.21 | 92.78 | 11/10/2025 | 07:11:03 | -70.11,-111.25 | 92.77 | 1.92 | 53 |
| 5 | 11/10/2025 | 08:00:55 | 70.01, 56.22 | 87.15 | 11/10/2025 | 08:00:30 | 70.00, 56.25 | 87.14 | 1.31 | 25 |
| 6 | 11/10/2025 | 08:51:21 | -69.09,-135.12 | 93.77 | 11/10/2025 | 08:50:14 | -69.12,-137.31 | 93.74 | 87.04 | 67 |
| 7 | 11/12/2025 | 22:36:43 | 70.88,-164.04 | 88.74 | 11/12/2025 | 22:37:50 | 70.80,-161.97 | 88.66 | 76.07 | 67 |
| 8 | 11/12/2025 | 23:27:11 | -70.06, 4.59 | 92.09 | 11/12/2025 | 23:27:32 | -70.04, 4.54 | 92.11 | 3.10 | 21 |
| 9 | 11/13/2025 | 00:17:55 | 69.93, 172.09 | 87.80 | 11/13/2025 | 00:16:59 | 69.93, 172.03 | 87.79 | 2.55 | 56 |
| 10 | 11/15/2025 | 14:53:29 | 70.13, -47.08 | 88.67 | 11/15/2025 | 14:54:29 | 70.10, -47.12 | 88.64 | 3.31 | 60 |
| 11 | 11/15/2025 | 15:44:11 | -70.04, 120.38 | 91.42 | 11/15/2025 | 15:43:58 | -70.05, 120.44 | 91.41 | 3.02 | 13 |
| 12 | 11/15/2025 | 16:34:44 | 69.33, -71.27 | 87.89 | 11/15/2025 | 16:33:35 | 69.38, -72.83 | 87.94 | 61.26 | 69 |
| 13 | 11/18/2025 | 07:10:29 | 70.06, 68.77 | 89.25 | 11/18/2025 | 07:10:56 | 70.08, 68.74 | 89.27 | 2.44 | 27 |
| 14 | 11/18/2025 | 08:01:11 | -69.96,-123.77 | 90.84 | 11/18/2025 | 08:00:26 | -69.98,-123.77 | 90.83 | 1.72 | 45 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 11/5/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 11/05/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8