Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 10 16.  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)
 10/17/2025   16:09:42   (  -0.02, 140.75) (   0.31, 139.24)  172.01                80
 10/18/2025   15:48:16   (  -0.02, 140.75) (  -0.68, 143.78)  345.57                80
 10/20/2025   04:10:10   (   0.02, 140.75) (  -0.50, 138.49)  257.86                80
 10/21/2025   03:54:05   (   0.02, 140.74) (   0.55, 143.02)  260.25                80
 10/22/2025   16:15:49   (   0.01, 140.72) (   0.67, 137.77)  335.40                80
 10/23/2025   15:54:23   (   0.01, 140.71) (  -0.33, 142.31)  182.76                80
 10/25/2025   04:16:17   (  -0.02, 140.70) (  -0.85, 137.02)  420.10                80
 10/26/2025   04:00:10   (  -0.01, 140.69) (   0.16, 141.56)   98.41                80
 10/27/2025   16:21:56   (   0.02, 140.66) (   0.99, 136.30)  496.94                80
 10/28/2025   16:00:29   (   0.01, 140.65) (  -0.02, 140.84)   21.70                80