Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 9 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/10/2019   06:39:50   (  -0.01, -75.20) (   0.44, -77.30)  238.74                80
 09/11/2019   06:18:14   (  -0.01, -75.20) (  -0.56, -72.72)  282.84                80
 09/12/2019   18:39:55   (   0.01, -75.21) (  -0.62, -77.96)  313.74                80
 09/13/2019   18:23:40   (   0.00, -75.22) (   0.44, -73.39)  208.35                80
 09/15/2019   06:45:11   (  -0.00, -75.23) (   0.74, -78.60)  382.91                80
 09/16/2019   06:23:36   (  -0.00, -75.25) (  -0.25, -74.02)  139.42                80
 09/17/2019   18:45:17   (   0.00, -75.26) (  -0.87, -79.27)  456.35                80
 09/18/2019   18:29:02   (   0.00, -75.27) (   0.13, -74.69)   66.25                80
 09/21/2019   06:31:39   (  -0.00, -75.31) (  -0.01, -75.33)    2.14                80