Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 10 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/01/2019   06:42:21   (   0.00, -75.21) (   0.59, -77.92)  308.03                80
 10/02/2019   06:20:46   (  -0.00, -75.22) (  -0.42, -73.34)  214.02                80
 10/03/2019   18:45:07   (  -0.00, -75.23) (  -0.72, -78.59)  381.82                80
 10/04/2019   18:26:11   (  -0.00, -75.24) (   0.28, -74.01)  140.60                80
 10/06/2019   06:47:43   (   0.00, -75.27) (   0.87, -79.22)  450.20                80
 10/07/2019   06:26:07   (   0.00, -75.28) (  -0.13, -74.64)   72.53                80
 10/09/2019   18:31:33   (  -0.00, -75.32) (  -0.00, -75.31)    1.09                80
 10/12/2019   06:34:10   (   0.00, -75.38) (   0.10, -75.96)   64.84                80
 10/13/2019   06:12:34   (   0.00, -75.40) (  -0.91, -71.38)  458.99                80
 10/14/2019   18:36:55   (   0.00, -75.44) (  -0.28, -76.62)  134.33                80