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: 7/12/2025
| 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 | 07/13/2025 | 06:20:27 | -70.13, -98.85 | 131.66 | 07/13/2025 | 06:21:08 | -70.10, -98.85 | 131.70 | 3.59 | 41 |
| 2 | 07/13/2025 | 07:11:11 | 70.01, 68.65 | 48.22 | 07/13/2025 | 07:10:35 | 70.00, 68.64 | 48.21 | 1.42 | 36 |
| 3 | 07/15/2025 | 21:46:52 | 70.79,-151.45 | 49.46 | 07/15/2025 | 21:48:00 | 70.69,-149.74 | 49.28 | 63.92 | 68 |
| 4 | 07/15/2025 | 22:37:22 | -70.07, 17.01 | 131.31 | 07/15/2025 | 22:37:39 | -70.09, 17.02 | 131.29 | 2.75 | 17 |
| 5 | 07/15/2025 | 23:28:06 | 69.95,-175.50 | 48.58 | 07/15/2025 | 23:27:07 | 69.93,-175.57 | 48.57 | 3.46 | 59 |
| 6 | 07/18/2025 | 14:03:35 | 70.16, -34.68 | 49.25 | 07/18/2025 | 14:04:40 | 70.13, -34.69 | 49.21 | 3.64 | 65 |
| 7 | 07/18/2025 | 14:54:16 | -70.01, 132.87 | 130.91 | 07/18/2025 | 14:54:10 | -70.03, 132.80 | 130.89 | 3.30 | 6 |
| 8 | 07/18/2025 | 15:44:53 | 69.53, -59.11 | 48.60 | 07/18/2025 | 15:43:43 | 69.59, -60.17 | 48.71 | 41.51 | 70 |
| 9 | 07/21/2025 | 06:20:30 | 70.11, 81.16 | 49.70 | 07/21/2025 | 06:21:11 | 70.11, 81.16 | 49.69 | 0.70 | 41 |
| 10 | 07/21/2025 | 07:11:12 | -70.01,-111.36 | 130.41 | 07/21/2025 | 07:10:41 | -70.01,-111.35 | 130.40 | 0.33 | 31 |
| 11 | 07/23/2025 | 21:46:56 | -70.95, 28.28 | 128.88 | 07/23/2025 | 21:48:03 | -70.85, 30.49 | 129.07 | 81.04 | 67 |
| 12 | 07/23/2025 | 22:37:25 | 70.07,-163.00 | 50.20 | 07/23/2025 | 22:37:42 | 70.08,-163.00 | 50.20 | 1.16 | 17 |
| 13 | 07/23/2025 | 23:28:07 | -69.96, 4.49 | 129.92 | 07/23/2025 | 23:27:12 | -69.98, 4.49 | 129.88 | 2.97 | 55 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/12/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/12/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8