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: 7/15/2025
| 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 | 07/15/2025 | 21:46:51 | 70.76,-151.40 | 49.42 | 07/15/2025 | 21:48:00 | 70.66,-149.78 | 49.25 | 60.27 | 69 |
| 2 | 07/15/2025 | 22:37:22 | -70.09, 16.98 | 131.28 | 07/15/2025 | 22:37:38 | -70.11, 17.04 | 131.27 | 3.33 | 16 |
| 3 | 07/15/2025 | 23:28:06 | 69.97,-175.53 | 48.60 | 07/15/2025 | 23:27:06 | 69.95,-175.54 | 48.59 | 2.02 | 60 |
| 4 | 07/18/2025 | 14:03:35 | 70.13, -34.63 | 49.22 | 07/18/2025 | 14:04:40 | 70.14, -34.68 | 49.21 | 1.92 | 65 |
| 5 | 07/18/2025 | 14:54:17 | -70.03, 132.83 | 130.88 | 07/18/2025 | 14:54:10 | -70.03, 132.80 | 130.88 | 1.25 | 7 |
| 6 | 07/18/2025 | 15:44:54 | 69.55, -59.14 | 48.62 | 07/18/2025 | 15:43:43 | 69.59, -60.16 | 48.71 | 39.76 | 71 |
| 7 | 07/21/2025 | 06:20:30 | 70.08, 81.21 | 49.67 | 07/21/2025 | 06:21:11 | 70.09, 81.14 | 49.67 | 2.82 | 41 |
| 8 | 07/21/2025 | 07:11:12 | -69.98,-111.32 | 130.43 | 07/21/2025 | 07:10:41 | -69.99,-111.38 | 130.42 | 2.34 | 31 |
| 9 | 07/23/2025 | 21:46:54 | -70.87, 28.41 | 128.96 | 07/23/2025 | 21:48:02 | -70.80, 30.42 | 129.12 | 73.74 | 68 |
| 10 | 07/23/2025 | 22:37:25 | 70.09,-163.04 | 50.22 | 07/23/2025 | 22:37:40 | 70.09,-162.99 | 50.21 | 2.06 | 15 |
| 11 | 07/23/2025 | 23:28:07 | -69.98, 4.45 | 129.89 | 07/23/2025 | 23:27:10 | -69.99, 4.50 | 129.88 | 2.27 | 57 |
| 12 | 07/26/2025 | 14:03:36 | -70.14, 145.34 | 129.15 | 07/26/2025 | 14:04:44 | -70.13, 145.31 | 129.18 | 1.70 | 68 |
| 13 | 07/26/2025 | 14:54:19 | 70.00, -47.13 | 50.71 | 07/26/2025 | 14:54:11 | 70.02, -47.21 | 50.73 | 3.41 | 8 |
| 14 | 07/26/2025 | 15:44:57 | -69.67, 120.68 | 129.63 | 07/26/2025 | 15:43:45 | -69.70, 119.98 | 129.57 | 26.88 | 72 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/15/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/15/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8