Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 8 20.  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)
 08/22/2025   04:17:11   (   0.01, 140.77) (  -0.88, 136.76)  455.73                80
 08/23/2025   04:01:05   (   0.01, 140.76) (   0.10, 141.31)   61.50                80
 08/25/2025   16:04:09   (  -0.00, 140.74) (   0.02, 140.56)   20.66                80
 08/26/2025   15:42:44   (  -0.00, 140.73) (  -0.95, 145.10)  497.10                80
 08/28/2025   04:04:40   (   0.00, 140.71) (  -0.19, 139.79)  104.40                80
 08/29/2025   03:48:35   (   0.00, 140.69) (   0.79, 144.33)  413.77                80
 08/30/2025   16:10:23   (  -0.00, 140.67) (   0.37, 139.05)  184.57                80
 08/31/2025   15:48:58   (   0.00, 140.65) (  -0.66, 143.58)  333.61                80
 09/02/2025   04:10:54   (  -0.01, 140.63) (  -0.52, 138.28)  267.37                80
 09/03/2025   03:54:49   (  -0.01, 140.61) (   0.51, 142.81)  251.32                80