Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 7 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/14/2019   06:37:29   (  -0.02, -75.20) (   0.30, -76.67)  167.73                80
 07/15/2019   06:15:54   (  -0.02, -75.20) (  -0.69, -72.09)  353.65                80
 07/16/2019   18:37:34   (   0.02, -75.21) (  -0.48, -77.34)  243.41                80
 07/17/2019   18:21:20   (   0.01, -75.21) (   0.57, -72.77)  278.51                80
 07/19/2019   06:40:12   (  -0.01, -75.23) (   0.60, -77.98)  313.07                80
 07/20/2019   06:23:58   (  -0.01, -75.24) (  -0.45, -73.41)  209.25                80
 07/21/2019   18:42:57   (   0.01, -75.26) (  -0.77, -78.64)  386.53                80
 07/22/2019   18:26:42   (   0.01, -75.27) (   0.28, -74.08)  136.27                80
 07/24/2019   06:45:35   (  -0.01, -75.30) (   0.90, -79.28)  454.12                80
 07/25/2019   06:29:20   (  -0.01, -75.32) (  -0.15, -74.72)   68.82                80