Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 4 26.  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   06:32:18   (  -0.01, -75.19) (   0.03, -75.31)   14.39                80
 04/28/2019   18:32:25   (   0.01, -75.20) (  -0.15, -75.99)   89.25                80
 04/29/2019   18:16:10   (   0.01, -75.21) (   0.88, -71.42)  432.26                80
 05/01/2019   06:37:43   (  -0.00, -75.21) (   0.29, -76.63)  161.56                80
 05/02/2019   06:16:08   (  -0.00, -75.22) (  -0.74, -72.06)  360.10                80
 05/03/2019   18:37:49   (   0.00, -75.24) (  -0.47, -77.30)  235.02                80
 05/04/2019   18:21:34   (   0.00, -75.25) (   0.56, -72.73)  287.02                80
 05/06/2019   06:43:06   (  -0.00, -75.26) (   0.61, -77.94)  305.83                80
 05/07/2019   06:21:32   (  -0.00, -75.27) (  -0.42, -73.37)  216.12                80
 05/08/2019   18:43:13   (  -0.00, -75.30) (  -0.73, -78.62)  378.99                80
 05/09/2019   18:26:59   (  -0.00, -75.31) (   0.30, -74.06)  143.29                80