Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 4 25.  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)
 04/27/2025   04:09:52   (  -0.02, 140.77) (  -0.49, 138.55)  252.47                80
 04/28/2025   03:53:49   (  -0.02, 140.77) (   0.51, 143.07)  262.89                80
 04/29/2025   16:15:39   (   0.02, 140.77) (   0.67, 137.79)  338.74                80
 04/30/2025   15:54:16   (   0.03, 140.77) (  -0.33, 142.32)  176.78                80
 05/02/2025   04:16:13   (  -0.03, 140.78) (  -0.88, 137.02)  429.17                80
 05/03/2025   04:00:10   (  -0.03, 140.78) (   0.13, 141.54)   86.96                80
 05/05/2025   16:00:36   (   0.04, 140.76) (   0.03, 140.79)    3.72                80
 05/08/2025   04:03:50   (  -0.04, 140.73) (  -0.20, 140.00)   83.02                80
 05/09/2025   03:47:47   (  -0.04, 140.72) (   0.82, 144.53)  434.62                80