Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and FY3D Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/8/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (FY3D) | Time (FY3D) | Lat,Lon (FY3D) | SZA (FY3D ) | Distance(km) | Time Diff (sec) |
| 1 | 10/21/2025 | 07:40:15 | 80.99, 11.74 | 94.85 | 10/21/2025 | 07:41:22 | 80.95, 14.99 | 94.42 | 56.95 | 67 |
| 2 | 10/21/2025 | 09:21:41 | 80.93, -12.25 | 94.68 | 10/21/2025 | 09:22:55 | 80.91, -11.72 | 94.57 | 9.58 | 74 |
| 3 | 10/21/2025 | 11:03:10 | 80.91, -37.34 | 94.66 | 10/21/2025 | 11:04:25 | 80.90, -37.31 | 94.61 | 1.23 | 75 |
| 4 | 10/21/2025 | 11:54:00 | -81.00, 127.96 | 85.04 | 10/21/2025 | 11:55:06 | -80.95, 131.74 | 85.54 | 66.13 | 66 |
| 5 | 10/21/2025 | 12:44:39 | 80.90, -62.43 | 94.64 | 10/21/2025 | 12:45:54 | 80.91, -62.53 | 94.62 | 2.00 | 75 |
| 6 | 10/21/2025 | 13:35:26 | -80.94, 103.97 | 85.22 | 10/21/2025 | 13:36:39 | -80.91, 105.04 | 85.39 | 18.97 | 73 |
| 7 | 10/21/2025 | 14:26:09 | 80.90, -87.88 | 94.68 | 10/21/2025 | 14:27:23 | 80.91, -87.75 | 94.63 | 2.45 | 74 |
| 8 | 10/21/2025 | 15:16:53 | -80.89, 79.60 | 85.34 | 10/21/2025 | 15:18:09 | -80.91, 79.45 | 85.35 | 3.09 | 76 |
| 9 | 10/21/2025 | 16:07:39 | 80.91,-113.33 | 94.71 | 10/21/2025 | 16:08:53 | 80.90,-113.34 | 94.68 | 0.30 | 74 |
| 10 | 10/21/2025 | 16:58:23 | -80.92, 53.79 | 85.25 | 10/21/2025 | 16:59:38 | -80.90, 53.86 | 85.30 | 1.90 | 75 |
| 11 | 10/21/2025 | 17:49:08 | 80.91,-138.78 | 94.75 | 10/21/2025 | 17:50:22 | 80.90,-138.93 | 94.72 | 3.05 | 74 |
| 12 | 10/21/2025 | 18:39:52 | -80.90, 28.70 | 85.27 | 10/21/2025 | 18:41:07 | -80.91, 28.63 | 85.29 | 1.31 | 75 |
| 13 | 10/21/2025 | 19:30:38 | 80.91,-164.23 | 94.79 | 10/21/2025 | 19:31:51 | 80.90,-164.16 | 94.73 | 1.71 | 73 |
| 14 | 10/21/2025 | 20:21:22 | -80.91, 3.25 | 85.23 | 10/21/2025 | 20:22:36 | -80.91, 3.41 | 85.28 | 2.82 | 74 |
| 15 | 10/21/2025 | 21:12:07 | 80.90, 170.68 | 94.77 | 10/21/2025 | 21:13:20 | 80.91, 170.62 | 94.75 | 1.38 | 73 |
| 16 | 10/21/2025 | 22:02:52 | -80.91, -22.19 | 85.20 | 10/21/2025 | 22:04:06 | -80.90, -22.18 | 85.24 | 0.62 | 74 |
| 17 | 10/21/2025 | 22:53:37 | 80.90, 145.23 | 94.80 | 10/21/2025 | 22:54:49 | 80.91, 145.40 | 94.76 | 3.05 | 72 |
| 18 | 10/21/2025 | 23:44:21 | -80.90, -47.28 | 85.21 | 10/21/2025 | 23:45:35 | -80.91, -47.40 | 85.23 | 2.52 | 74 |
| 19 | 10/22/2025 | 00:35:07 | 80.91, 119.78 | 94.84 | 10/22/2025 | 00:36:19 | 80.90, 119.81 | 94.80 | 0.46 | 72 |
| 20 | 10/22/2025 | 01:25:52 | -80.92, -73.09 | 85.13 | 10/22/2025 | 01:27:05 | -80.90, -72.99 | 85.18 | 2.37 | 73 |
| 21 | 10/22/2025 | 02:16:37 | 80.91, 94.34 | 94.87 | 10/22/2025 | 02:17:49 | 80.90, 94.22 | 94.85 | 2.50 | 72 |
| 22 | 10/22/2025 | 03:07:21 | -80.90, -98.18 | 85.14 | 10/22/2025 | 03:08:34 | -80.91, -98.21 | 85.17 | 0.71 | 73 |
Figure of NOAA-21 and FY3D satellite orbits during SNOs since TLE Epoch: 10/8/2025
Download SNOs between NOAA-21 and FY3D since TLE EPOCH: 10/08/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and FY3D