Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 9 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)
 09/27/2019   06:15:24   (   0.01, -75.19) (  -0.71, -72.04)  359.44                80
 09/28/2019   18:37:04   (  -0.01, -75.21) (  -0.48, -77.28)  236.43                80
 09/29/2019   18:20:50   (  -0.01, -75.21) (   0.58, -72.72)  285.42                80
 10/01/2019   06:42:20   (   0.01, -75.22) (   0.63, -77.91)  307.15                80
 10/02/2019   06:20:46   (   0.00, -75.23) (  -0.43, -73.34)  214.92                80
 10/03/2019   18:42:26   (  -0.00, -75.25) (  -0.76, -78.58)  380.11                80
 10/04/2019   18:26:12   (  -0.00, -75.26) (   0.30, -74.02)  142.36                80
 10/06/2019   06:47:42   (   0.00, -75.28) (   0.91, -79.21)  449.15                80
 10/07/2019   06:26:07   (   0.00, -75.29) (  -0.15, -74.65)   73.62                80
 10/09/2019   18:31:32   (  -0.01, -75.34) (  -0.03, -75.31)    4.26                80