Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 5 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/20/2019   18:18:50   (  -0.00, -75.18) (   0.68, -72.09)  351.40                80
 05/22/2019   06:40:22   (  -0.00, -75.17) (   0.46, -77.30)  242.68                80
 05/23/2019   06:18:48   (  -0.01, -75.17) (  -0.58, -72.74)  278.23                80
 05/24/2019   18:40:29   (   0.01, -75.18) (  -0.59, -77.98)  318.96                80
 05/25/2019   18:24:14   (   0.01, -75.19) (   0.39, -73.40)  202.57                80
 05/27/2019   06:45:46   (  -0.01, -75.20) (   0.74, -78.62)  389.89                80
 05/28/2019   06:24:11   (  -0.01, -75.20) (  -0.30, -74.05)  131.92                80
 05/29/2019   18:45:52   (   0.01, -75.22) (  -0.93, -79.29)  464.25                80
 05/30/2019   18:29:37   (   0.02, -75.23) (   0.12, -74.72)   58.00                80
 06/02/2019   06:32:15   (  -0.02, -75.26) (  -0.03, -75.37)   11.52                80