Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 4 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)
 04/13/2019   18:18:51   (  -0.01, -75.20) (   0.67, -72.03)  360.68                80
 04/15/2019   06:40:24   (   0.02, -75.20) (   0.47, -77.25)  233.08                80
 04/16/2019   06:18:50   (   0.02, -75.21) (  -0.56, -72.68)  288.23                80
 04/17/2019   18:40:30   (  -0.02, -75.22) (  -0.64, -77.92)  308.41                80
 04/18/2019   18:24:17   (   0.02, -75.23) (   0.45, -73.37)  212.44                80
 04/20/2019   06:45:49   (  -0.02, -75.24) (   0.75, -78.57)  380.04                80
 04/21/2019   06:24:15   (  -0.02, -75.25) (  -0.28, -74.00)  142.01                80
 04/22/2019   18:45:56   (   0.02, -75.27) (  -0.85, -79.26)  453.83                80
 04/23/2019   18:29:41   (   0.02, -75.28) (   0.18, -74.69)   68.66                80
 04/26/2019   06:29:39   (  -0.02, -75.33) (  -0.02, -75.33)    0.12                80