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: 10/30/2025
| Index | Date | Time (HIMAWARI-9) | HIMAWARI-9 Lat,Lon | NOAA-21 Lat,Lon | Distance(km) | Time Diff (sec) |
| 1 | 10/31/2025 | 04:03:38 | 0.00, 140.75 | -0.12, 140.08 | 75.20 | 80 |
| 2 | 11/01/2025 | 03:47:31 | 0.00, 140.73 | 0.89, 144.62 | 443.51 | 80 |
| 3 | 11/02/2025 | 16:09:15 | -0.00, 140.70 | 0.29, 139.37 | 151.65 | 80 |
| 4 | 11/03/2025 | 15:47:49 | -0.00, 140.69 | -0.72, 143.91 | 367.21 | 80 |
| 5 | 11/05/2025 | 04:09:43 | 0.00, 140.68 | -0.45, 138.61 | 235.04 | 80 |
| 6 | 11/06/2025 | 03:53:37 | -0.00, 140.66 | 0.57, 143.15 | 284.10 | 80 |
| 7 | 11/07/2025 | 16:15:21 | 0.00, 140.62 | 0.60, 137.90 | 310.35 | 80 |
| 8 | 11/08/2025 | 15:53:55 | 0.00, 140.61 | -0.42, 142.44 | 208.76 | 80 |
| 9 | 11/10/2025 | 04:15:49 | 0.02, 140.60 | -0.74, 137.14 | 393.65 | 80 |
| 10 | 11/11/2025 | 03:59:42 | 0.02, 140.57 | 0.29, 141.68 | 126.19 | 80 |
| 11 | 11/12/2025 | 16:21:27 | -0.02, 140.52 | 0.88, 136.42 | 466.40 | 80 |
| 12 | 11/13/2025 | 16:00:00 | -0.03, 140.49 | -0.15, 140.96 | 53.94 | 80 |
Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/30/2025
Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 10/30/2025 in txt file.
Historical Predications of SNOs between HIMAWARI-9 and NOAA-21