Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 9 7.  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)
 09/08/2025   04:01:01   (   0.03, 140.76) (   0.15, 141.32)   63.28                80
 09/10/2025   16:04:04   (  -0.03, 140.74) (  -0.01, 140.58)   18.40                80
 09/11/2025   15:42:38   (  -0.02, 140.74) (  -1.00, 145.12)  499.26                80
 09/13/2025   04:04:34   (   0.03, 140.72) (  -0.16, 139.81)  103.16                80
 09/14/2025   03:48:28   (   0.03, 140.71) (   0.84, 144.35)  414.64                80
 09/15/2025   16:10:15   (  -0.04, 140.69) (   0.35, 139.08)  183.85                80
 09/16/2025   15:48:51   (  -0.04, 140.68) (  -0.71, 143.61)  334.24                80
 09/18/2025   04:10:45   (   0.04, 140.66) (  -0.50, 138.32)  267.17                80
 09/19/2025   03:54:41   (   0.04, 140.64) (   0.56, 142.84)  251.84                80
 09/20/2025   16:16:28   (  -0.05, 140.60) (   0.61, 137.57)  344.26                80
 09/21/2025   15:55:03   (  -0.05, 140.57) (  -0.39, 142.11)  175.26                80