Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 11 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/10/2019   18:25:47   (   0.00, -75.20) (   0.30, -73.92)  146.77                80
 11/12/2019   06:47:19   (  -0.00, -75.21) (   0.87, -79.12)  445.59                80
 11/13/2019   06:25:43   (  -0.00, -75.21) (  -0.14, -74.54)   76.26                80
 11/15/2019   18:31:08   (  -0.00, -75.23) (   0.03, -75.21)    3.55                80
 11/18/2019   06:33:44   (   0.01, -75.25) (   0.13, -75.84)   67.05                80
 11/19/2019   06:12:08   (   0.01, -75.26) (  -0.88, -71.26)  455.25                80
 11/20/2019   18:33:48   (  -0.01, -75.27) (  -0.29, -76.50)  139.59                80
 11/21/2019   18:17:32   (  -0.01, -75.29) (   0.73, -71.92)  383.23                80
 11/23/2019   06:39:04   (   0.01, -75.31) (   0.40, -77.14)  207.46                80