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: 11/14/2025
| 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 | 11/15/2025 | 14:53:29 | 70.12, -47.07 | 88.66 | 11/15/2025 | 14:54:33 | 70.10, -47.14 | 88.64 | 3.25 | 64 |
| 2 | 11/15/2025 | 15:44:11 | -70.04, 120.37 | 91.42 | 11/15/2025 | 15:44:02 | -70.05, 120.42 | 91.41 | 1.96 | 9 |
| 3 | 11/15/2025 | 16:34:47 | 69.48, -71.49 | 88.04 | 11/15/2025 | 16:33:36 | 69.56, -72.61 | 88.11 | 44.51 | 71 |
| 4 | 11/18/2025 | 07:10:29 | 70.08, 68.75 | 89.27 | 11/18/2025 | 07:11:04 | 70.06, 68.68 | 89.25 | 3.06 | 35 |
| 5 | 11/18/2025 | 08:01:11 | -69.99,-123.80 | 90.82 | 11/18/2025 | 08:00:33 | -70.01,-123.76 | 90.80 | 2.86 | 38 |
| 6 | 11/20/2025 | 22:36:50 | -70.48, 16.56 | 89.73 | 11/20/2025 | 22:38:01 | -70.42, 17.43 | 89.79 | 32.81 | 71 |
| 7 | 11/20/2025 | 23:27:28 | 70.05,-175.45 | 89.85 | 11/20/2025 | 23:27:33 | 70.03,-175.48 | 89.84 | 1.98 | 5 |
| 8 | 11/21/2025 | 00:18:10 | -69.95, -7.99 | 90.24 | 11/21/2025 | 00:17:03 | -69.93, -8.00 | 90.27 | 2.59 | 67 |
| 9 | 11/23/2025 | 14:53:44 | -70.14, 132.85 | 89.50 | 11/23/2025 | 14:54:35 | -70.13, 132.89 | 89.51 | 2.11 | 51 |
| 10 | 11/23/2025 | 15:44:28 | 70.03, -59.68 | 90.41 | 11/23/2025 | 15:44:02 | 70.01, -59.63 | 90.39 | 2.68 | 26 |
| 11 | 11/23/2025 | 16:34:54 | -69.08, 109.02 | 90.54 | 11/23/2025 | 16:33:47 | -69.08, 106.75 | 90.54 | 90.13 | 67 |
| 12 | 11/26/2025 | 06:20:15 | 70.92, 80.03 | 91.82 | 11/26/2025 | 06:21:22 | 70.82, 82.17 | 91.71 | 79.01 | 67 |
| 13 | 11/26/2025 | 07:10:43 | -70.08,-111.30 | 89.04 | 11/26/2025 | 07:11:04 | -70.07,-111.31 | 89.05 | 1.25 | 21 |
| 14 | 11/26/2025 | 08:01:27 | 69.98, 56.16 | 90.87 | 11/26/2025 | 08:00:31 | 69.95, 56.17 | 90.85 | 2.84 | 56 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 11/14/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 11/14/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8