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: 11/19/2025
| Index | Date | Time (HIMAWARI-9) | HIMAWARI-9 Lat,Lon | NOAA-21 Lat,Lon | Distance(km) | Time Diff (sec) |
| 1 | 11/21/2025 | 04:10:16 | -0.01, 140.77 | -0.52, 138.51 | 257.53 | 80 |
| 2 | 11/22/2025 | 03:54:13 | -0.01, 140.77 | 0.51, 143.03 | 258.02 | 80 |
| 3 | 11/23/2025 | 16:16:03 | 0.02, 140.77 | 0.67, 137.76 | 342.65 | 80 |
| 4 | 11/24/2025 | 15:54:40 | 0.02, 140.77 | -0.30, 142.29 | 173.03 | 80 |
| 5 | 11/26/2025 | 04:16:40 | -0.03, 140.77 | -0.86, 136.97 | 433.25 | 80 |
| 6 | 11/27/2025 | 04:00:38 | -0.03, 140.77 | 0.17, 141.49 | 83.04 | 80 |
| 7 | 11/29/2025 | 16:01:05 | 0.03, 140.74 | 0.03, 140.75 | 0.95 | 80 |
| 8 | 12/02/2025 | 04:04:22 | -0.03, 140.73 | -0.21, 139.96 | 88.01 | 80 |
| 9 | 12/03/2025 | 03:48:19 | -0.04, 140.72 | 0.83, 144.48 | 428.95 | 80 |
Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/19/2025
Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 11/19/2025 in txt file.
Historical Predications of SNOs between HIMAWARI-9 and NOAA-21