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: 11/7/2025
| 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 | -70.58, 132.28 | 93.06 | 11/07/2025 | 14:54:28 | -70.51, 133.45 | 93.13 | 44.25 | 70 |
| 2 | 11/07/2025 | 15:43:54 | 70.02, -59.53 | 86.39 | 11/07/2025 | 15:44:02 | 70.02, -59.61 | 86.39 | 2.95 | 8 |
| 3 | 11/07/2025 | 16:34:36 | -69.95, 107.89 | 93.67 | 11/07/2025 | 16:33:31 | -69.97, 107.94 | 93.66 | 2.63 | 65 |
| 4 | 11/10/2025 | 07:10:10 | -70.13,-111.25 | 92.75 | 11/10/2025 | 07:11:02 | -70.13,-111.21 | 92.75 | 1.92 | 52 |
| 5 | 11/10/2025 | 08:00:54 | 69.99, 56.26 | 87.12 | 11/10/2025 | 08:00:30 | 69.97, 56.20 | 87.11 | 2.71 | 24 |
| 6 | 11/10/2025 | 08:51:20 | -69.06,-135.08 | 93.79 | 11/10/2025 | 08:50:13 | -69.15,-137.28 | 93.72 | 87.71 | 67 |
| 7 | 11/12/2025 | 22:36:42 | 70.86,-164.01 | 88.72 | 11/12/2025 | 22:37:50 | 70.77,-162.02 | 88.62 | 73.28 | 68 |
| 8 | 11/12/2025 | 23:27:10 | -70.04, 4.62 | 92.10 | 11/12/2025 | 23:27:31 | -70.06, 4.57 | 92.09 | 2.51 | 21 |
| 9 | 11/13/2025 | 00:17:55 | 69.97, 172.04 | 87.83 | 11/13/2025 | 00:16:58 | 69.95, 172.06 | 87.81 | 1.92 | 57 |
| 10 | 11/15/2025 | 14:53:29 | 70.12, -47.07 | 88.66 | 11/15/2025 | 14:54:29 | 70.11, -47.10 | 88.65 | 1.46 | 60 |
| 11 | 11/15/2025 | 15:44:11 | -70.03, 120.39 | 91.43 | 11/15/2025 | 15:43:59 | -70.01, 120.38 | 91.45 | 2.25 | 12 |
| 12 | 11/15/2025 | 16:34:44 | 69.32, -71.26 | 87.88 | 11/15/2025 | 16:33:35 | 69.40, -72.81 | 87.95 | 61.35 | 69 |
| 13 | 11/18/2025 | 07:10:29 | 70.07, 68.76 | 89.26 | 11/18/2025 | 07:10:56 | 70.09, 68.75 | 89.28 | 2.10 | 27 |
| 14 | 11/18/2025 | 08:01:11 | -69.97,-123.77 | 90.83 | 11/18/2025 | 08:00:26 | -69.98,-123.76 | 90.82 | 1.37 | 45 |
| 15 | 11/20/2025 | 22:36:44 | -70.14, 17.10 | 90.07 | 11/20/2025 | 22:37:55 | -70.15, 17.08 | 90.06 | 1.08 | 71 |
| 16 | 11/20/2025 | 23:27:28 | 70.03,-175.43 | 89.84 | 11/20/2025 | 23:27:22 | 70.03,-175.44 | 89.83 | 0.32 | 6 |
| 17 | 11/21/2025 | 00:18:07 | -69.77, -7.72 | 90.43 | 11/21/2025 | 00:16:54 | -69.82, -8.10 | 90.38 | 15.72 | 73 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 11/7/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 11/07/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8