Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 4 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)
 04/22/2025   04:03:35   (  -0.03, 140.76) (  -0.17, 140.07)   77.82                80
 04/23/2025   03:47:28   (  -0.03, 140.75) (   0.85, 144.61)  440.41                80
 04/24/2025   16:09:14   (   0.03, 140.74) (   0.33, 139.35)  158.21                80
 04/25/2025   15:47:47   (   0.03, 140.73) (  -0.69, 143.89)  360.17                80
 04/27/2025   04:09:40   (  -0.03, 140.71) (  -0.52, 138.60)  240.08                80
 04/28/2025   03:53:33   (  -0.03, 140.69) (   0.50, 143.14)  278.74                80
 04/29/2025   16:15:18   (   0.03, 140.68) (   0.67, 137.88)  319.06                80
 04/30/2025   15:53:52   (   0.03, 140.66) (  -0.36, 142.42)  199.66                80
 05/02/2025   04:15:45   (  -0.02, 140.64) (  -0.78, 137.12)  400.31                80
 05/03/2025   03:59:38   (  -0.03, 140.62) (   0.19, 141.67)  119.29                80
 05/04/2025   16:21:23   (   0.03, 140.58) (   0.97, 136.40)  476.59                80