Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between HIMAWARI-9 and NOAA-21 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 5/9/2025
| Index | Date | Time (HIMAWARI-9) | HIMAWARI-9 Lat,Lon | NOAA-21 Lat,Lon | Distance(km) | Time Diff (sec) |
| 1 | 05/10/2025 | 16:09:38 | 0.00, 140.74 | 0.35, 139.25 | 170.33 | 80 |
| 2 | 05/11/2025 | 15:48:14 | 0.00, 140.74 | -0.66, 143.77 | 345.82 | 80 |
| 3 | 05/13/2025 | 04:10:12 | -0.00, 140.74 | -0.54, 138.47 | 259.36 | 80 |
| 4 | 05/14/2025 | 03:54:08 | -0.00, 140.73 | 0.48, 142.99 | 257.14 | 80 |
| 5 | 05/15/2025 | 16:15:58 | -0.00, 140.71 | 0.68, 137.71 | 342.64 | 80 |
| 6 | 05/16/2025 | 15:54:35 | -0.00, 140.71 | -0.34, 142.23 | 173.82 | 80 |
| 7 | 05/18/2025 | 04:16:32 | 0.01, 140.71 | -0.85, 136.93 | 430.97 | 80 |
| 8 | 05/19/2025 | 04:00:29 | 0.01, 140.69 | 0.18, 141.45 | 86.10 | 80 |
| 9 | 05/21/2025 | 16:00:55 | 0.02, 140.65 | 0.01, 140.70 | 6.11 | 80 |
Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/9/2025
Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 05/09/2025 in txt file.
Historical Predications of SNOs between HIMAWARI-9 and NOAA-21