Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/17/2019   06:48:24   (  -0.01, -75.20) (   0.89, -79.28)  464.76                80
 06/18/2019   06:26:49   (  -0.01, -75.20) (  -0.10, -74.70)   56.43                80
 06/20/2019   18:29:36   (   0.01, -75.21) (  -0.02, -75.38)   19.22                80
 06/23/2019   06:34:52   (  -0.01, -75.24) (   0.17, -76.02)   88.81                80
 06/24/2019   06:13:18   (  -0.00, -75.25) (  -0.87, -71.45)  433.57                80
 06/25/2019   18:34:58   (   0.00, -75.27) (  -0.34, -76.69)  162.02                80
 06/26/2019   18:18:44   (  -0.00, -75.28) (   0.71, -72.12)  360.73                80
 06/28/2019   06:40:16   (  -0.01, -75.31) (   0.44, -77.33)  229.90                80
 06/29/2019   06:18:42   (  -0.01, -75.33) (  -0.60, -72.77)  292.70                80
 06/30/2019   18:40:22   (   0.02, -75.35) (  -0.59, -78.00)  302.77                80