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: 9/20/2025
| 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 | 09/20/2025 | 14:03:41 | 71.03, -36.05 | 70.12 | 09/20/2025 | 14:04:47 | 70.97, -33.47 | 70.01 | 93.59 | 66 |
| 2 | 09/20/2025 | 14:54:06 | -70.06, 132.83 | 110.87 | 09/20/2025 | 14:54:31 | -70.08, 132.85 | 110.85 | 2.49 | 25 |
| 3 | 09/20/2025 | 15:44:50 | 69.94, -59.67 | 69.02 | 09/20/2025 | 15:43:59 | 69.93, -59.72 | 69.01 | 2.16 | 51 |
| 4 | 09/23/2025 | 06:20:20 | 70.28, 80.96 | 70.38 | 09/23/2025 | 06:21:31 | 70.20, 81.26 | 70.29 | 14.32 | 71 |
| 5 | 09/23/2025 | 07:10:59 | -70.04,-111.36 | 109.85 | 09/23/2025 | 07:11:02 | -70.03,-111.35 | 109.87 | 1.56 | 3 |
| 6 | 09/23/2025 | 08:01:42 | 69.86, 56.22 | 69.98 | 09/23/2025 | 08:00:30 | 69.87, 56.07 | 69.99 | 5.69 | 72 |
| 7 | 09/25/2025 | 22:37:10 | 70.11,-162.99 | 71.24 | 09/25/2025 | 22:38:02 | 70.12,-162.98 | 71.25 | 1.64 | 52 |
| 8 | 09/25/2025 | 23:27:52 | -70.03, 4.44 | 108.83 | 09/25/2025 | 23:27:32 | -70.01, 4.50 | 108.85 | 3.17 | 20 |
| 9 | 09/26/2025 | 00:18:20 | 69.05, 173.17 | 70.20 | 09/26/2025 | 00:17:13 | 69.13, 170.96 | 70.30 | 88.30 | 67 |
| 10 | 09/28/2025 | 14:54:02 | 70.10, -47.20 | 72.27 | 09/28/2025 | 14:54:31 | 70.08, -47.16 | 72.25 | 2.71 | 29 |
| 11 | 09/28/2025 | 15:44:43 | -69.97, 120.32 | 107.85 | 09/28/2025 | 15:44:01 | -69.97, 120.33 | 107.85 | 0.49 | 42 |
| 12 | 10/01/2025 | 06:20:18 | -70.59, -99.50 | 106.21 | 10/01/2025 | 06:21:28 | -70.45, -98.37 | 106.35 | 44.31 | 70 |
| 13 | 10/01/2025 | 07:10:54 | 70.04, 68.67 | 73.25 | 10/01/2025 | 07:11:01 | 70.01, 68.64 | 73.23 | 3.24 | 7 |
| 14 | 10/01/2025 | 08:01:35 | -69.91,-123.82 | 106.87 | 10/01/2025 | 08:00:31 | -69.91,-123.88 | 106.87 | 2.14 | 64 |
| 15 | 10/03/2025 | 22:37:02 | -70.12, 17.02 | 105.65 | 10/03/2025 | 22:38:03 | -70.10, 17.00 | 105.67 | 2.27 | 61 |
| 16 | 10/03/2025 | 23:27:46 | 69.99,-175.47 | 74.24 | 10/03/2025 | 23:27:30 | 69.98,-175.52 | 74.23 | 1.82 | 16 |
| 17 | 10/04/2025 | 00:18:18 | -69.39, -7.27 | 106.36 | 10/04/2025 | 00:17:08 | -69.44, -8.63 | 106.30 | 53.60 | 70 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/20/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/20/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8