Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 5 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/02/2019   06:32:14   (   0.01, -75.20) (   0.04, -75.35)   17.15                80
 06/04/2019   18:32:21   (  -0.00, -75.21) (  -0.18, -76.03)   92.74                80
 06/05/2019   18:16:06   (  -0.00, -75.22) (   0.87, -71.46)  428.61                80
 06/07/2019   06:37:38   (  -0.00, -75.22) (   0.32, -76.66)  164.62                80
 06/08/2019   06:16:03   (  -0.01, -75.22) (  -0.72, -72.10)  356.88                80
 06/09/2019   18:37:44   (   0.01, -75.24) (  -0.44, -77.34)  239.22                80
 06/10/2019   18:21:29   (   0.01, -75.25) (   0.54, -72.76)  282.91                80
 06/12/2019   06:43:01   (  -0.01, -75.27) (   0.58, -77.98)  308.82                80
 06/13/2019   06:21:27   (  -0.01, -75.28) (  -0.46, -73.41)  213.65                80