Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 4 11.  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)
 04/12/2025   03:54:03   (  -0.01, 140.76) (   0.51, 143.02)  258.94                80
 04/13/2025   16:15:48   (   0.01, 140.77) (   0.67, 137.77)  341.88                80
 04/14/2025   15:54:22   (   0.01, 140.78) (  -0.33, 142.31)  174.28                80
 04/16/2025   04:16:15   (  -0.01, 140.79) (  -0.88, 137.02)  430.15                80
 04/17/2025   04:00:10   (  -0.00, 140.79) (   0.19, 141.54)   86.50                80
 04/19/2025   16:00:28   (   0.00, 140.80) (  -0.02, 140.82)    4.07                80
 04/22/2025   04:03:34   (  -0.01, 140.80) (  -0.20, 140.08)   83.21                80
 04/23/2025   03:47:28   (  -0.01, 140.80) (   0.82, 144.62)  434.40                80
 04/24/2025   16:09:13   (   0.01, 140.79) (   0.35, 139.35)  163.88                80
 04/25/2025   15:47:47   (   0.01, 140.78) (  -0.67, 143.89)  353.86                80