Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 6 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/14/2021   06:53:30   (  -0.03, -75.25) (   0.85, -79.15)  444.29                80
 06/15/2021   06:37:12   (  -0.03, -75.26) (  -0.19, -74.56)   79.68                80
 06/17/2021   18:39:51   (   0.03, -75.29) (   0.04, -75.18)   12.00                80
 06/20/2021   06:39:41   (  -0.04, -75.32) (   0.06, -75.77)   51.91                80
 06/21/2021   06:23:24   (  -0.03, -75.33) (  -0.98, -71.19)  472.67                80
 06/22/2021   18:42:20   (   0.05, -75.36) (  -0.21, -76.39)  118.90                80
 06/23/2021   18:26:02   (   0.04, -75.37) (   0.84, -71.81)  405.84                80
 06/25/2021   06:44:50   (  -0.05, -75.39) (   0.31, -76.98)  182.09                80
 06/26/2021   06:28:32   (  -0.05, -75.41) (  -0.73, -72.40)  342.93                80
 06/27/2021   18:47:28   (   0.06, -75.44) (  -0.45, -77.61)  247.71                80