Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 5 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/22/2019   06:40:22   (  -0.00, -75.17) (   0.50, -77.30)  242.90                80
 05/23/2019   06:18:47   (  -0.01, -75.17) (  -0.54, -72.73)  277.92                80
 05/24/2019   18:40:29   (   0.01, -75.18) (  -0.63, -77.98)  319.23                80
 05/25/2019   18:24:14   (   0.01, -75.18) (   0.41, -73.41)  202.21                80
 05/27/2019   06:45:46   (  -0.01, -75.19) (   0.73, -78.62)  390.47                80
 05/28/2019   06:24:11   (  -0.01, -75.20) (  -0.25, -74.04)  131.25                80
 05/29/2019   18:45:52   (   0.02, -75.21) (  -0.92, -79.29)  464.91                80
 05/30/2019   18:29:38   (   0.02, -75.23) (   0.12, -74.72)   57.25                80
 06/02/2019   06:32:16   (  -0.02, -75.26) (  -0.02, -75.37)   12.45                80