Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 4 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/26/2019   06:32:19   (   0.00, -75.19) (   0.00, -75.32)   14.28                80
 04/28/2019   18:32:24   (  -0.00, -75.21) (  -0.18, -75.99)   88.85                80
 04/29/2019   18:16:10   (  -0.00, -75.21) (   0.85, -71.42)  432.70                80
 05/01/2019   06:37:42   (   0.00, -75.22) (   0.33, -76.63)  160.95                80
 05/02/2019   06:16:08   (   0.00, -75.22) (  -0.70, -72.06)  360.81                80
 05/03/2019   18:37:49   (   0.00, -75.25) (  -0.45, -77.31)  234.27                80
 05/04/2019   18:21:35   (   0.00, -75.26) (   0.58, -72.74)  287.85                80
 05/06/2019   06:43:07   (  -0.00, -75.27) (   0.60, -77.95)  304.90                80
 05/07/2019   06:21:32   (  -0.01, -75.28) (  -0.43, -73.38)  217.01                80
 05/08/2019   18:43:14   (   0.02, -75.31) (  -0.72, -78.63)  378.29                80