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, -75.20) (  -0.30, -76.69)  169.12                80
 08/02/2019   18:18:33   (   0.04, -75.22) (   0.75, -72.12)  353.60                80
 08/04/2019   06:37:25   (  -0.04, -75.25) (   0.43, -77.33)  237.16                80
 08/05/2019   06:21:11   (  -0.04, -75.27) (  -0.63, -72.76)  286.05                80
 08/06/2019   18:40:10   (   0.05, -75.30) (  -0.58, -77.99)  307.86                80
 08/07/2019   18:23:55   (   0.05, -75.32) (   0.47, -73.43)  215.69                80
 08/09/2019   06:42:48   (  -0.05, -75.36) (   0.70, -78.64)  374.03                80
 08/10/2019   06:26:33   (  -0.05, -75.38) (  -0.35, -74.07)  149.76                80
 08/11/2019   18:45:34   (   0.06, -75.42) (  -0.79, -79.32)  443.28                80
 08/12/2019   18:29:18   (   0.06, -75.45) (   0.21, -74.74)   80.87                80
 08/15/2019   06:29:16   (  -0.07, -75.53) (  -0.09, -75.38)   16.89                80