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: 4/7/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 04/08/2025 16:09:41 0.05, 140.78 0.37, 139.25 173.92 80
2 04/09/2025 15:48:14 0.05, 140.78 -0.62, 143.80 343.83 80
3 04/11/2025 04:10:08 -0.05, 140.75 -0.55, 138.50 257.09 80
4 04/12/2025 03:54:02 -0.05, 140.74 0.45, 143.04 261.34 80
5 04/13/2025 16:15:47 0.05, 140.73 0.74, 137.78 336.84 80
6 04/14/2025 15:54:22 0.05, 140.72 -0.32, 142.31 181.68 80
7 04/16/2025 04:16:15 -0.05, 140.69 -0.88, 137.02 418.56 80
8 04/17/2025 04:00:09 -0.05, 140.67 0.13, 141.56 100.39 80
9 04/18/2025 16:21:54 0.05, 140.65 1.05, 136.30 496.91 80
10 04/19/2025 16:00:27 0.06, 140.63 0.04, 140.83 22.35 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 4/7/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250408.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 04/07/2025 in txt file.

Historical Predications of SNOs between HIMAWARI-9 and NOAA-21