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: 6/11/2025
| Index | Date | Time (HIMAWARI-9) | HIMAWARI-9 Lat,Lon | NOAA-21 Lat,Lon | Distance(km) | Time Diff (sec) |
| 1 | 06/12/2025 | 15:48:42 | -0.02, 140.77 | -0.66, 143.65 | 328.09 | 80 |
| 2 | 06/14/2025 | 04:10:39 | 0.02, 140.77 | -0.54, 138.35 | 276.96 | 80 |
| 3 | 06/15/2025 | 03:54:36 | 0.01, 140.77 | 0.50, 142.87 | 239.55 | 80 |
| 4 | 06/16/2025 | 16:16:24 | -0.01, 140.76 | 0.69, 137.60 | 360.55 | 80 |
| 5 | 06/17/2025 | 15:55:00 | -0.01, 140.76 | -0.30, 142.13 | 156.23 | 80 |
| 6 | 06/19/2025 | 04:16:58 | 0.01, 140.75 | -0.84, 136.81 | 448.04 | 80 |
| 7 | 06/20/2025 | 04:00:53 | 0.01, 140.74 | 0.14, 141.35 | 69.18 | 80 |
| 8 | 06/22/2025 | 16:03:58 | -0.02, 140.71 | -0.02, 140.60 | 12.97 | 80 |
| 9 | 06/25/2025 | 04:04:31 | 0.02, 140.69 | -0.19, 139.82 | 99.33 | 80 |
Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 6/11/2025
Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 06/11/2025 in txt file.
Historical Predications of SNOs between HIMAWARI-9 and NOAA-21