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: 4/28/2025
| Index | Date | Time (HIMAWARI-9) | HIMAWARI-9 Lat,Lon | NOAA-21 Lat,Lon | Distance(km) | Time Diff (sec) |
| 1 | 04/29/2025 | 16:15:39 | 0.02, 140.77 | 0.69, 137.80 | 338.94 | 80 |
| 2 | 04/30/2025 | 15:54:16 | 0.03, 140.78 | -0.31, 142.33 | 176.56 | 80 |
| 3 | 05/02/2025 | 04:16:14 | -0.02, 140.78 | -0.85, 137.01 | 429.62 | 80 |
| 4 | 05/03/2025 | 04:00:10 | -0.03, 140.78 | 0.16, 141.54 | 86.48 | 80 |
| 5 | 05/05/2025 | 16:03:17 | 0.03, 140.76 | 0.01, 140.78 | 3.71 | 80 |
| 6 | 05/08/2025 | 04:03:51 | -0.03, 140.74 | -0.19, 140.00 | 83.85 | 80 |
| 7 | 05/09/2025 | 03:47:48 | -0.04, 140.72 | 0.82, 144.53 | 433.70 | 80 |
| 8 | 05/10/2025 | 16:09:38 | 0.03, 140.69 | 0.34, 139.24 | 164.54 | 80 |
| 9 | 05/11/2025 | 15:48:14 | 0.03, 140.67 | -0.68, 143.77 | 353.13 | 80 |
Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 4/28/2025
Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 04/28/2025 in txt file.
Historical Predications of SNOs between HIMAWARI-9 and NOAA-21