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: 7/19/2025
| Index | Date | Time (HIMAWARI-9) | HIMAWARI-9 Lat,Lon | NOAA-21 Lat,Lon | Distance(km) | Time Diff (sec) |
| 1 | 07/21/2025 | 04:17:10 | 0.01, 140.76 | -0.89, 136.77 | 455.31 | 80 |
| 2 | 07/22/2025 | 04:01:06 | 0.00, 140.77 | 0.12, 141.30 | 60.35 | 80 |
| 3 | 07/24/2025 | 16:04:09 | 0.01, 140.79 | 0.06, 140.57 | 25.50 | 80 |
| 4 | 07/25/2025 | 15:42:44 | 0.01, 140.79 | -0.94, 145.10 | 490.86 | 80 |
| 5 | 07/27/2025 | 04:04:41 | -0.01, 140.77 | -0.23, 139.79 | 112.31 | 80 |
| 6 | 07/28/2025 | 03:48:37 | -0.01, 140.77 | 0.79, 144.32 | 404.84 | 80 |
| 7 | 07/29/2025 | 16:10:24 | 0.02, 140.76 | 0.42, 139.05 | 194.83 | 80 |
| 8 | 07/30/2025 | 15:49:00 | 0.02, 140.75 | -0.59, 143.58 | 322.60 | 80 |
| 9 | 08/01/2025 | 04:10:57 | -0.02, 140.72 | -0.56, 138.27 | 279.38 | 80 |
| 10 | 08/02/2025 | 03:54:53 | -0.02, 140.71 | 0.45, 142.80 | 238.51 | 80 |
Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/19/2025
Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 07/19/2025 in txt file.
Historical Predications of SNOs between HIMAWARI-9 and NOAA-21