Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 7 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/01/2019   18:24:07   (   0.02, -75.20) (   0.44, -73.43)  202.17                80
 07/03/2019   06:42:58   (  -0.02, -75.19) (   0.76, -78.63)  391.72                80
 07/04/2019   06:26:44   (  -0.01, -75.19) (  -0.28, -74.06)  129.49                80
 07/05/2019   18:45:44   (   0.01, -75.20) (  -0.91, -79.30)  467.11                80
 07/06/2019   18:29:28   (  -0.00, -75.20) (   0.08, -74.72)   54.64                80
 07/09/2019   06:32:06   (   0.01, -75.22) (   0.02, -75.37)   16.30                80
 07/11/2019   18:32:11   (  -0.01, -75.25) (  -0.20, -76.03)   89.25                80
 07/12/2019   18:15:57   (  -0.00, -75.26) (   0.85, -71.46)  433.19                80
 07/14/2019   06:34:49   (  -0.00, -75.28) (   0.31, -76.67)  158.62                80