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: 8/20/2025
| 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 | 08/22/2025 | 06:20:31 | 70.11, 81.16 | 58.40 | 08/22/2025 | 06:21:21 | 70.14, 81.20 | 58.42 | 3.28 | 50 |
| 2 | 08/22/2025 | 07:11:13 | -70.00,-111.35 | 121.71 | 08/22/2025 | 07:10:51 | -70.03,-111.33 | 121.68 | 3.40 | 22 |
| 3 | 08/22/2025 | 08:01:40 | 69.00, 57.40 | 57.27 | 08/22/2025 | 08:00:34 | 69.04, 54.98 | 57.39 | 96.20 | 66 |
| 4 | 08/24/2025 | 22:37:25 | 70.07,-163.01 | 59.27 | 08/24/2025 | 22:37:51 | 70.08,-163.01 | 59.26 | 0.28 | 26 |
| 5 | 08/24/2025 | 23:28:07 | -69.95, 4.49 | 120.85 | 08/24/2025 | 23:27:21 | -69.96, 4.47 | 120.84 | 1.44 | 46 |
| 6 | 08/27/2025 | 14:03:38 | -70.33, 145.05 | 119.55 | 08/27/2025 | 14:04:50 | -70.27, 145.51 | 119.64 | 18.42 | 72 |
| 7 | 08/27/2025 | 14:54:18 | 70.04, -47.18 | 60.16 | 08/27/2025 | 14:54:19 | 70.05, -47.16 | 60.17 | 1.72 | 1 |
| 8 | 08/27/2025 | 15:45:00 | -69.92, 120.32 | 119.96 | 08/27/2025 | 15:43:49 | -69.94, 120.32 | 119.93 | 2.87 | 71 |
| 9 | 08/30/2025 | 06:20:29 | -70.14, -98.88 | 118.81 | 08/30/2025 | 06:21:21 | -70.12, -98.82 | 118.84 | 3.18 | 52 |
| 10 | 08/30/2025 | 07:11:12 | 70.00, 68.64 | 61.07 | 08/30/2025 | 07:10:48 | 70.01, 68.67 | 61.07 | 1.14 | 24 |
| 11 | 08/30/2025 | 08:01:39 | -69.09,-122.71 | 119.87 | 08/30/2025 | 08:00:32 | -69.13,-124.88 | 119.76 | 86.20 | 67 |
| 12 | 09/01/2025 | 22:37:22 | -70.06, 17.02 | 117.93 | 09/01/2025 | 22:37:50 | -70.07, 16.99 | 117.93 | 1.36 | 28 |
| 13 | 09/01/2025 | 23:28:06 | 69.97,-175.54 | 62.00 | 09/01/2025 | 23:27:17 | 69.95,-175.52 | 61.98 | 2.59 | 49 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 8/20/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 08/20/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8