Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 11 19.  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)
 11/21/2025   04:10:16   (  -0.01, 140.77) (  -0.52, 138.51)  257.53                80
 11/22/2025   03:54:13   (  -0.01, 140.77) (   0.51, 143.03)  258.02                80
 11/23/2025   16:16:03   (   0.02, 140.77) (   0.67, 137.76)  342.65                80
 11/24/2025   15:54:40   (   0.02, 140.77) (  -0.30, 142.29)  173.03                80
 11/26/2025   04:16:40   (  -0.03, 140.77) (  -0.86, 136.97)  433.25                80
 11/27/2025   04:00:38   (  -0.03, 140.77) (   0.17, 141.49)   83.04                80
 11/29/2025   16:01:05   (   0.03, 140.74) (   0.03, 140.75)    0.95                80
 12/02/2025   04:04:22   (  -0.03, 140.73) (  -0.21, 139.96)   88.01                80
 12/03/2025   03:48:19   (  -0.04, 140.72) (   0.83, 144.48)  428.95                80