Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 9 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/21/2019   06:31:38   (  -0.00, -75.21) (   0.01, -75.32)   12.82                80
 09/23/2019   18:31:44   (  -0.00, -75.23) (  -0.14, -75.99)   86.79                80
 09/24/2019   18:15:28   (  -0.00, -75.23) (   0.86, -71.42)  435.15                80
 09/26/2019   06:36:59   (   0.00, -75.24) (   0.31, -76.62)  157.50                80
 09/27/2019   06:15:24   (   0.00, -75.25) (  -0.69, -72.04)  364.66                80
 09/28/2019   18:37:05   (  -0.01, -75.27) (  -0.44, -77.29)  230.00                80
 09/29/2019   18:20:50   (  -0.00, -75.29) (   0.56, -72.72)  292.68                80
 10/01/2019   06:42:21   (   0.00, -75.30) (   0.60, -77.92)  298.59                80
 10/02/2019   06:20:47   (   0.00, -75.32) (  -0.46, -73.36)  224.26                80