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: 8/27/2025
| 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 | 08/30/2025 | 06:20:29 | -70.13, -98.86 | 118.82 | 08/30/2025 | 06:21:24 | -70.13, -98.82 | 118.83 | 1.46 | 55 |
| 2 | 08/30/2025 | 07:11:12 | 69.99, 68.67 | 61.05 | 08/30/2025 | 07:10:52 | 69.97, 68.60 | 61.04 | 3.16 | 20 |
| 3 | 08/30/2025 | 08:01:41 | -69.19,-122.85 | 119.77 | 08/30/2025 | 08:00:33 | -69.26,-124.74 | 119.64 | 75.07 | 68 |
| 4 | 09/01/2025 | 22:37:22 | -70.05, 17.03 | 117.93 | 09/01/2025 | 22:37:56 | -70.07, 16.97 | 117.92 | 2.87 | 34 |
| 5 | 09/01/2025 | 23:28:06 | 69.96,-175.52 | 61.99 | 09/01/2025 | 23:27:23 | 69.96,-175.54 | 61.99 | 0.81 | 43 |
| 6 | 09/04/2025 | 14:03:40 | 70.52, -35.23 | 63.52 | 09/04/2025 | 14:04:51 | 70.42, -34.28 | 63.39 | 36.94 | 71 |
| 7 | 09/04/2025 | 14:54:15 | -70.04, 132.83 | 116.97 | 09/04/2025 | 14:54:26 | -70.04, 132.80 | 116.97 | 1.24 | 11 |
| 8 | 09/04/2025 | 15:44:59 | 69.94, -59.71 | 62.95 | 09/04/2025 | 15:43:53 | 69.93, -59.71 | 62.94 | 1.49 | 66 |
| 9 | 09/07/2025 | 06:20:27 | 70.13, 81.14 | 64.11 | 09/07/2025 | 06:21:26 | 70.15, 81.20 | 64.12 | 2.46 | 59 |
| 10 | 09/07/2025 | 07:11:09 | -70.02,-111.37 | 115.99 | 09/07/2025 | 07:10:56 | -70.04,-111.31 | 115.98 | 3.06 | 13 |
| 11 | 09/07/2025 | 08:01:42 | 69.35, 56.93 | 63.33 | 09/07/2025 | 08:00:33 | 69.38, 55.42 | 63.40 | 59.49 | 69 |
| 12 | 09/09/2025 | 22:37:20 | 70.07,-162.99 | 65.05 | 09/09/2025 | 22:37:57 | 70.07,-163.03 | 65.05 | 1.54 | 37 |
| 13 | 09/09/2025 | 23:28:02 | -69.96, 4.49 | 115.05 | 09/09/2025 | 23:27:27 | -69.97, 4.46 | 115.04 | 1.29 | 35 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 8/27/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 08/27/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8