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: 9/30/2025
| Index | Date | Time (HIMAWARI-9) | HIMAWARI-9 Lat,Lon | NOAA-21 Lat,Lon | Distance(km) | Time Diff (sec) |
| 1 | 10/01/2025 | 16:10:03 | -0.02, 140.80 | 0.34, 139.15 | 187.74 | 80 |
| 2 | 10/02/2025 | 15:48:38 | -0.02, 140.82 | -0.69, 143.68 | 326.85 | 80 |
| 3 | 10/04/2025 | 04:10:32 | 0.02, 140.84 | -0.51, 138.39 | 279.58 | 80 |
| 4 | 10/05/2025 | 03:54:25 | 0.02, 140.86 | 0.46, 142.93 | 235.79 | 80 |
| 5 | 10/06/2025 | 16:16:12 | -0.02, 140.88 | 0.70, 137.67 | 366.26 | 80 |
| 6 | 10/07/2025 | 15:54:46 | -0.02, 140.90 | -0.34, 142.20 | 149.25 | 80 |
| 7 | 10/09/2025 | 04:16:40 | 0.02, 140.92 | -0.85, 136.91 | 456.64 | 80 |
| 8 | 10/10/2025 | 04:00:34 | 0.02, 140.93 | 0.13, 141.45 | 59.12 | 80 |
| 9 | 10/12/2025 | 16:03:34 | -0.03, 140.96 | 0.02, 140.72 | 26.40 | 80 |
| 10 | 10/13/2025 | 15:42:07 | -0.03, 140.97 | -0.97, 145.27 | 489.51 | 80 |
Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/30/2025
Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 09/30/2025 in txt file.
Historical Predications of SNOs between HIMAWARI-9 and NOAA-21