Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 4 28.  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)
 04/29/2025   16:15:39   (   0.02, 140.77) (   0.69, 137.80)  338.94                80
 04/30/2025   15:54:16   (   0.03, 140.78) (  -0.31, 142.33)  176.56                80
 05/02/2025   04:16:14   (  -0.02, 140.78) (  -0.85, 137.01)  429.62                80
 05/03/2025   04:00:10   (  -0.03, 140.78) (   0.16, 141.54)   86.48                80
 05/05/2025   16:03:17   (   0.03, 140.76) (   0.01, 140.78)    3.71                80
 05/08/2025   04:03:51   (  -0.03, 140.74) (  -0.19, 140.00)   83.85                80
 05/09/2025   03:47:48   (  -0.04, 140.72) (   0.82, 144.53)  433.70                80
 05/10/2025   16:09:38   (   0.03, 140.69) (   0.34, 139.24)  164.54                80
 05/11/2025   15:48:14   (   0.03, 140.67) (  -0.68, 143.77)  353.13                80