Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 8 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/01/2019   18:34:47   (   0.04, -75.21) (  -0.31, -76.68)  168.75                80
 08/02/2019   18:18:33   (   0.04, -75.22) (   0.74, -72.12)  353.72                80
 08/04/2019   06:37:25   (  -0.04, -75.24) (   0.44, -77.33)  237.65                80
 08/05/2019   06:21:10   (  -0.04, -75.26) (  -0.62, -72.76)  285.29                80
 08/06/2019   18:40:11   (   0.05, -75.29) (  -0.53, -78.01)  308.83                80
 08/07/2019   18:23:55   (   0.05, -75.31) (   0.47, -73.43)  214.46                80
 08/09/2019   06:42:48   (  -0.05, -75.34) (   0.71, -78.64)  375.87                80
 08/10/2019   06:26:33   (  -0.06, -75.37) (  -0.34, -74.07)  147.65                80
 08/11/2019   18:45:33   (   0.06, -75.40) (  -0.80, -79.32)  445.58                80
 08/12/2019   18:29:18   (   0.06, -75.43) (   0.20, -74.74)   78.31                80