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: 9/7/2025
| 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 | 09/07/2025 | 06:20:27 | 70.14, 81.14 | 64.11 | 09/07/2025 | 06:21:26 | 70.11, 81.15 | 64.08 | 3.07 | 59 |
| 2 | 09/07/2025 | 07:11:08 | -69.98,-111.31 | 116.03 | 09/07/2025 | 07:10:56 | -69.99,-111.38 | 116.03 | 2.87 | 12 |
| 3 | 09/07/2025 | 08:01:42 | 69.35, 56.93 | 63.33 | 09/07/2025 | 08:00:32 | 69.40, 55.45 | 63.41 | 58.58 | 70 |
| 4 | 09/09/2025 | 22:37:19 | 70.09,-163.01 | 65.07 | 09/09/2025 | 22:37:54 | 70.10,-162.98 | 65.08 | 2.06 | 35 |
| 5 | 09/09/2025 | 23:28:01 | -69.99, 4.46 | 115.02 | 09/09/2025 | 23:27:24 | -69.99, 4.50 | 115.02 | 1.62 | 37 |
| 6 | 09/12/2025 | 14:03:39 | -70.73, 144.44 | 113.27 | 09/12/2025 | 14:04:48 | -70.61, 146.01 | 113.42 | 59.37 | 69 |
| 7 | 09/12/2025 | 14:54:12 | 70.05, -47.17 | 66.04 | 09/12/2025 | 14:54:23 | 70.07, -47.14 | 66.06 | 2.73 | 11 |
| 8 | 09/12/2025 | 15:44:54 | -69.95, 120.29 | 114.05 | 09/12/2025 | 15:43:53 | -69.96, 120.34 | 114.04 | 2.07 | 61 |
| 9 | 09/15/2025 | 06:20:21 | -70.12, -98.82 | 112.87 | 09/15/2025 | 06:21:25 | -70.12, -98.83 | 112.89 | 0.62 | 64 |
| 10 | 09/15/2025 | 07:11:05 | 70.02, 68.66 | 67.03 | 09/15/2025 | 07:10:52 | 70.01, 68.66 | 67.03 | 0.68 | 13 |
| 11 | 09/15/2025 | 08:01:39 | -69.50,-123.26 | 113.49 | 09/15/2025 | 08:00:28 | -69.57,-124.31 | 113.39 | 41.61 | 71 |
| 12 | 09/17/2025 | 22:37:14 | -70.10, 17.00 | 111.87 | 09/17/2025 | 22:37:53 | -70.09, 17.02 | 111.89 | 1.31 | 39 |
| 13 | 09/17/2025 | 23:27:58 | 69.99,-175.52 | 68.03 | 09/17/2025 | 23:27:20 | 69.98,-175.49 | 68.02 | 1.79 | 38 |
| 14 | 09/20/2025 | 14:03:33 | 70.64, -35.40 | 69.72 | 09/20/2025 | 14:04:43 | 70.52, -34.10 | 69.57 | 50.22 | 70 |
| 15 | 09/20/2025 | 14:54:05 | -70.03, 132.89 | 110.91 | 09/20/2025 | 14:54:20 | -70.03, 132.83 | 110.91 | 2.36 | 15 |
| 16 | 09/20/2025 | 15:44:49 | 69.91, -59.63 | 69.00 | 09/20/2025 | 15:43:47 | 69.91, -59.69 | 69.00 | 2.15 | 62 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/7/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/07/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8