Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 11 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)
 11/09/2019   18:42:03   (   0.00, -75.20) (  -0.72, -78.49)  375.43                80
 11/10/2019   18:25:47   (   0.00, -75.20) (   0.30, -73.92)  146.32                80
 11/12/2019   06:47:19   (  -0.00, -75.21) (   0.87, -79.12)  445.82                80
 11/13/2019   06:25:43   (  -0.00, -75.21) (  -0.14, -74.54)   75.98                80
 11/15/2019   18:28:28   (   0.00, -75.23) (   0.03, -75.21)    3.08                80
 11/18/2019   06:33:44   (   0.00, -75.24) (   0.13, -75.84)   67.86                80
 11/19/2019   06:12:08   (   0.00, -75.25) (  -0.88, -71.26)  454.34                80
 11/20/2019   18:33:48   (  -0.00, -75.26) (  -0.29, -76.50)  141.00                80
 11/21/2019   18:17:32   (  -0.00, -75.28) (   0.73, -71.92)  381.70                80