Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 9 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/08/2019   18:18:17   (  -0.00, -75.19) (   0.69, -72.08)  354.52                80
 09/10/2019   06:39:50   (  -0.02, -75.20) (   0.44, -77.30)  238.61                80
 09/11/2019   06:18:14   (  -0.01, -75.20) (  -0.56, -72.72)  283.11                80
 09/12/2019   18:39:55   (   0.01, -75.21) (  -0.62, -77.96)  313.31                80
 09/13/2019   18:23:40   (   0.00, -75.22) (   0.44, -73.39)  208.90                80
 09/15/2019   06:45:11   (  -0.00, -75.24) (   0.74, -78.60)  382.25                80
 09/16/2019   06:23:36   (  -0.00, -75.25) (  -0.26, -74.02)  140.20                80
 09/17/2019   18:45:16   (   0.00, -75.27) (  -0.92, -79.26)  455.37                80
 09/18/2019   18:29:02   (   0.00, -75.28) (   0.14, -74.70)   67.36                80
 09/21/2019   06:31:39   (  -0.00, -75.33) (  -0.03, -75.33)    2.90                80