Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/28/2019   06:37:35   (   0.01, -75.20) (   0.49, -77.32)  241.82                80
 06/29/2019   06:19:10   (  -0.01, -75.20) (  -0.55, -72.75)  278.61                50
 06/30/2019   18:40:22   (   0.02, -75.20) (  -0.60, -78.00)  318.80                80
 07/01/2019   18:24:06   (   0.02, -75.20) (   0.39, -73.42)  202.29                80
 07/03/2019   06:45:38   (  -0.02, -75.20) (   0.75, -78.63)  391.44                80
 07/04/2019   06:24:04   (  -0.01, -75.20) (  -0.29, -74.07)  129.82                80
 07/05/2019   18:45:44   (   0.01, -75.21) (  -0.90, -79.30)  466.78                80
 07/06/2019   18:29:29   (  -0.00, -75.21) (   0.09, -74.72)   55.04                80
 07/09/2019   06:32:07   (   0.01, -75.23) (   0.02, -75.37)   15.54                80