Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 4 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/28/2019   18:32:24   (  -0.00, -75.20) (  -0.20, -75.98)   88.94                80
 04/29/2019   18:16:09   (  -0.00, -75.21) (   0.83, -71.41)  432.53                80
 05/01/2019   06:37:42   (   0.00, -75.21) (   0.34, -76.62)  161.64                80
 05/02/2019   06:16:07   (   0.00, -75.21) (  -0.70, -72.05)  360.05                80
 05/03/2019   18:37:49   (  -0.00, -75.24) (  -0.45, -77.30)  234.92                80
 05/04/2019   18:21:34   (  -0.00, -75.25) (   0.58, -72.74)  287.13                80
 05/06/2019   06:43:06   (   0.00, -75.26) (   0.58, -77.95)  306.06                80
 05/07/2019   06:21:31   (   0.00, -75.27) (  -0.40, -73.37)  215.87                80
 05/08/2019   18:43:12   (   0.00, -75.29) (  -0.75, -78.62)  379.19                80
 05/09/2019   18:26:58   (   0.01, -75.30) (   0.28, -74.05)  142.90                80
 05/11/2019   06:48:30   (  -0.01, -75.32) (   0.87, -79.26)  449.68                80