Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 7 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/27/2019   18:29:25   (   0.03, -75.21) (  -0.01, -75.38)   20.04                80
 07/30/2019   06:32:03   (  -0.04, -75.23) (   0.13, -76.02)   90.50                80
 07/31/2019   06:15:48   (  -0.05, -75.24) (  -0.92, -71.46)  431.76                80
 08/01/2019   18:34:47   (   0.05, -75.27) (  -0.29, -76.69)  162.84                80
 08/02/2019   18:18:33   (   0.05, -75.28) (   0.76, -72.12)  359.87                80
 08/04/2019   06:37:25   (  -0.05, -75.30) (   0.41, -77.33)  231.61                80
 08/05/2019   06:21:11   (  -0.05, -75.32) (  -0.64, -72.77)  291.57                80
 08/06/2019   18:40:10   (   0.06, -75.36) (  -0.56, -78.00)  301.65                80
 08/07/2019   18:23:56   (   0.06, -75.38) (   0.49, -73.43)  221.89                80
 08/09/2019   06:45:28   (  -0.06, -75.41) (   0.69, -78.64)  368.52                80