Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/12/2019   06:40:21   (   0.01, -75.20) (   0.60, -77.97)  315.27                80
 06/13/2019   06:21:25   (   0.01, -75.20) (  -0.38, -73.39)  206.14                80
 06/14/2019   18:43:07   (   0.00, -75.21) (  -0.79, -78.64)  391.33                80
 06/15/2019   18:26:52   (   0.01, -75.22) (   0.25, -74.07)  130.41                80
 06/17/2019   06:45:45   (  -0.01, -75.23) (   0.87, -79.29)  461.28                80
 06/18/2019   06:26:49   (  -0.01, -75.24) (  -0.11, -74.71)   60.85                80
 06/20/2019   18:29:36   (   0.00, -75.27) (  -0.00, -75.39)   13.03                80
 06/23/2019   06:32:13   (   0.01, -75.32) (   0.15, -76.02)   80.14                80
 06/24/2019   06:15:58   (   0.01, -75.34) (  -0.89, -71.46)  443.02                80