Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 8 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)
 08/11/2019   18:45:32   (   0.04, -75.17) (  -0.91, -79.29)  470.01                80
 08/12/2019   18:29:17   (   0.04, -75.17) (   0.14, -74.72)   50.97                80
 08/15/2019   06:31:55   (  -0.05, -75.17) (  -0.03, -75.37)   21.44                80
 08/17/2019   18:32:00   (   0.05, -75.19) (  -0.12, -76.03)   95.57                80
 08/18/2019   18:15:44   (   0.05, -75.20) (   0.87, -71.45)  426.56                80
 08/20/2019   06:37:17   (  -0.05, -75.22) (   0.29, -76.66)  165.43                80
 08/21/2019   06:15:42   (  -0.05, -75.23) (  -0.76, -72.10)  356.90                80
 08/22/2019   18:37:21   (   0.05, -75.25) (  -0.44, -77.33)  238.28                80
 08/23/2019   18:21:07   (   0.06, -75.26) (   0.62, -72.77)  284.23                80