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: 10/17/2025
| Index | Date | Time (HIMAWARI-9) | HIMAWARI-9 Lat,Lon | NOAA-21 Lat,Lon | Distance(km) | Time Diff (sec) |
| 1 | 10/18/2025 | 15:48:17 | -0.03, 140.75 | -0.73, 143.77 | 345.29 | 80 |
| 2 | 10/20/2025 | 04:10:11 | 0.03, 140.75 | -0.45, 138.48 | 258.21 | 80 |
| 3 | 10/21/2025 | 03:54:05 | 0.03, 140.74 | 0.54, 143.02 | 259.86 | 80 |
| 4 | 10/22/2025 | 16:15:49 | -0.01, 140.72 | 0.68, 137.77 | 336.30 | 80 |
| 5 | 10/23/2025 | 15:54:24 | -0.00, 140.71 | -0.38, 142.30 | 181.95 | 80 |
| 6 | 10/25/2025 | 04:18:57 | -0.01, 140.71 | -0.86, 137.02 | 420.83 | 80 |
| 7 | 10/26/2025 | 03:57:31 | -0.00, 140.70 | 0.20, 141.55 | 97.60 | 80 |
| 8 | 10/27/2025 | 16:21:56 | 0.01, 140.67 | 1.00, 136.30 | 497.87 | 80 |
| 9 | 10/28/2025 | 16:00:30 | 0.00, 140.65 | -0.07, 140.83 | 20.91 | 80 |
| 10 | 10/31/2025 | 04:06:17 | -0.00, 140.62 | -0.15, 140.08 | 62.26 | 80 |
Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/17/2025
Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 10/17/2025 in txt file.
Historical Predications of SNOs between HIMAWARI-9 and NOAA-21