Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 11 23.  Predictions up to the next  14.0 days:

     Date     Time(HIMAWARI-9)   HIMAWARI-9 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 11/24/2025   15:54:40   (   0.02, 140.78) (  -0.32, 142.29)  172.22                80
 11/26/2025   04:16:40   (  -0.02, 140.80) (  -0.90, 136.98)  436.64                80
 11/27/2025   04:00:37   (  -0.01, 140.81) (   0.13, 141.50)   78.30                80
 11/29/2025   16:03:45   (   0.01, 140.80) (   0.00, 140.74)    7.13                80
 12/02/2025   04:07:01   (  -0.02, 140.83) (  -0.23, 139.96)   98.70                80
 12/03/2025   03:48:18   (  -0.02, 140.83) (   0.81, 144.48)  417.01                80
 12/04/2025   16:10:09   (   0.03, 140.81) (   0.36, 139.20)  182.47                80
 12/05/2025   15:48:45   (   0.02, 140.81) (  -0.62, 143.74)  333.12                80
 12/07/2025   04:13:24   (  -0.03, 140.83) (  -0.56, 138.42)  273.87                80