Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 10 15.  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)
 10/16/2025   03:47:57   (   0.02, 140.77) (   0.87, 144.50)  425.52                80
 10/17/2025   16:09:42   (  -0.02, 140.76) (   0.31, 139.24)  172.88                80
 10/18/2025   15:48:16   (  -0.02, 140.76) (  -0.69, 143.78)  344.47                80
 10/20/2025   04:10:10   (   0.03, 140.76) (  -0.50, 138.49)  259.23                80
 10/21/2025   03:54:05   (   0.03, 140.75) (   0.55, 143.02)  258.67                80
 10/22/2025   16:15:49   (  -0.03, 140.73) (   0.66, 137.77)  338.19                80
 10/23/2025   15:54:24   (  -0.03, 140.72) (  -0.40, 142.30)  179.82                80
 10/25/2025   04:16:18   (   0.02, 140.72) (  -0.78, 137.00)  423.18                80
 10/26/2025   04:00:11   (   0.02, 140.71) (   0.22, 141.55)   95.20                80
 10/28/2025   16:00:29   (  -0.02, 140.67) (  -0.03, 140.84)   18.32                80