Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 4 19.  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) (  -0.16, 140.07)   77.96                80
 04/23/2025   03:47:29   (  -0.03, 140.75) (   0.85, 144.61)  440.23                80
 04/24/2025   16:09:14   (   0.03, 140.74) (   0.32, 139.35)  158.42                80
 04/25/2025   15:47:47   (   0.03, 140.73) (  -0.70, 143.89)  359.92                80
 04/27/2025   04:09:40   (  -0.03, 140.71) (  -0.52, 138.60)  240.47                80
 04/28/2025   03:53:33   (  -0.03, 140.70) (   0.51, 143.14)  278.30                80
 04/29/2025   16:15:18   (   0.03, 140.68) (   0.66, 137.88)  319.38                80
 04/30/2025   15:53:52   (   0.03, 140.67) (  -0.37, 142.41)  199.30                80
 05/02/2025   04:15:44   (  -0.03, 140.64) (  -0.83, 137.13)  400.79                80
 05/03/2025   03:59:38   (  -0.03, 140.62) (   0.21, 141.66)  118.74                80