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: 7/18/2025
| 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 | 07/18/2025 | 14:03:35 | 70.13, -34.63 | 49.22 | 07/18/2025 | 14:04:40 | 70.13, -34.68 | 49.21 | 1.87 | 65 |
| 2 | 07/18/2025 | 14:54:17 | -70.04, 132.83 | 130.88 | 07/18/2025 | 14:54:10 | -70.02, 132.79 | 130.89 | 2.21 | 7 |
| 3 | 07/18/2025 | 15:44:54 | 69.55, -59.14 | 48.62 | 07/18/2025 | 15:43:43 | 69.59, -60.16 | 48.71 | 39.78 | 71 |
| 4 | 07/21/2025 | 06:20:30 | 70.09, 81.21 | 49.67 | 07/21/2025 | 06:21:11 | 70.09, 81.13 | 49.67 | 2.77 | 41 |
| 5 | 07/21/2025 | 07:11:12 | -69.99,-111.33 | 130.43 | 07/21/2025 | 07:10:41 | -69.98,-111.39 | 130.43 | 2.40 | 31 |
| 6 | 07/23/2025 | 21:46:54 | -70.88, 28.40 | 128.96 | 07/23/2025 | 21:48:02 | -70.79, 30.41 | 129.13 | 73.86 | 68 |
| 7 | 07/23/2025 | 22:37:25 | 70.10,-163.04 | 50.23 | 07/23/2025 | 22:37:40 | 70.08,-162.99 | 50.21 | 2.40 | 15 |
| 8 | 07/23/2025 | 23:28:07 | -69.99, 4.44 | 129.88 | 07/23/2025 | 23:27:10 | -69.98, 4.49 | 129.89 | 2.46 | 57 |
| 9 | 07/26/2025 | 14:03:36 | -70.15, 145.33 | 129.14 | 07/26/2025 | 14:04:44 | -70.12, 145.30 | 129.18 | 3.26 | 68 |
| 10 | 07/26/2025 | 14:54:19 | 70.01, -47.14 | 50.71 | 07/26/2025 | 14:54:11 | 70.01, -47.21 | 50.72 | 3.02 | 8 |
| 11 | 07/26/2025 | 15:44:57 | -69.68, 120.66 | 129.62 | 07/26/2025 | 15:43:44 | -69.75, 120.05 | 129.53 | 24.83 | 73 |
| 12 | 07/29/2025 | 06:20:31 | -70.11, -98.84 | 128.57 | 07/29/2025 | 06:21:14 | -70.10, -98.86 | 128.59 | 1.75 | 43 |
| 13 | 07/29/2025 | 07:11:14 | 69.97, 68.68 | 51.30 | 07/29/2025 | 07:10:41 | 69.98, 68.63 | 51.31 | 2.47 | 33 |
| 14 | 07/31/2025 | 21:46:56 | 70.83,-151.53 | 52.84 | 07/31/2025 | 21:48:04 | 70.70,-149.72 | 52.63 | 68.11 | 68 |
| 15 | 07/31/2025 | 22:37:26 | -70.07, 16.99 | 127.95 | 07/31/2025 | 22:37:44 | -70.05, 16.97 | 127.98 | 2.23 | 18 |
| 16 | 07/31/2025 | 23:28:09 | 69.94,-175.50 | 51.92 | 07/31/2025 | 23:27:11 | 69.94,-175.55 | 51.92 | 2.05 | 58 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/18/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/18/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8