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: 10/23/2025
| 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 | 10/25/2025 | 07:10:20 | -70.11,-111.29 | 97.79 | 10/25/2025 | 07:11:01 | -70.12,-111.23 | 97.79 | 2.25 | 41 |
| 2 | 10/25/2025 | 08:01:04 | 69.97, 56.24 | 82.09 | 10/25/2025 | 08:00:29 | 69.96, 56.19 | 82.07 | 2.30 | 35 |
| 3 | 10/27/2025 | 22:36:43 | 70.98,-164.21 | 83.99 | 10/27/2025 | 22:37:49 | 70.87,-161.87 | 83.88 | 85.94 | 66 |
| 4 | 10/27/2025 | 23:27:09 | -70.08, 4.56 | 96.91 | 10/27/2025 | 23:27:32 | -70.05, 4.55 | 96.94 | 3.21 | 23 |
| 5 | 10/28/2025 | 00:17:53 | 69.94, 172.07 | 82.97 | 10/28/2025 | 00:16:59 | 69.94, 172.05 | 82.97 | 1.13 | 54 |
| 6 | 10/30/2025 | 14:53:20 | 70.28, -47.28 | 84.17 | 10/30/2025 | 14:54:31 | 70.22, -46.96 | 84.11 | 13.65 | 71 |
| 7 | 10/30/2025 | 15:43:59 | -70.06, 120.39 | 96.05 | 10/30/2025 | 15:44:02 | -70.06, 120.44 | 96.05 | 2.25 | 3 |
| 8 | 10/30/2025 | 16:34:43 | 69.92, -72.10 | 83.83 | 10/30/2025 | 16:33:29 | 69.95, -72.07 | 83.86 | 3.32 | 74 |
| 9 | 11/02/2025 | 07:10:07 | 70.11, 68.77 | 84.86 | 11/02/2025 | 07:11:02 | 70.14, 68.80 | 84.88 | 2.85 | 55 |
| 10 | 11/02/2025 | 08:00:48 | -69.99,-123.72 | 95.26 | 11/02/2025 | 08:00:33 | -69.98,-123.79 | 95.27 | 2.83 | 15 |
| 11 | 11/02/2025 | 08:51:19 | 69.17, 44.78 | 83.94 | 11/02/2025 | 08:50:11 | 69.26, 42.87 | 84.02 | 76.02 | 68 |
| 12 | 11/04/2025 | 23:26:56 | 70.06,-175.35 | 85.64 | 11/04/2025 | 23:27:32 | 70.08,-175.41 | 85.65 | 2.58 | 36 |
| 13 | 11/05/2025 | 00:17:38 | -69.99, -7.92 | 94.44 | 11/05/2025 | 00:17:02 | -69.98, -7.91 | 94.45 | 0.78 | 36 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 10/23/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 10/23/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8