Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 9 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/13/2019   18:23:39   (  -0.00, -75.19) (   0.40, -73.38)  205.96                80
 09/15/2019   06:45:10   (   0.00, -75.19) (   0.78, -78.58)  386.99                80
 09/16/2019   06:23:36   (   0.00, -75.20) (  -0.28, -74.02)  134.44                80
 09/17/2019   18:45:16   (  -0.00, -75.20) (  -0.90, -79.26)  462.34                80
 09/18/2019   18:29:01   (  -0.00, -75.21) (   0.10, -74.68)   59.38                80
 09/21/2019   06:31:38   (   0.00, -75.22) (   0.01, -75.32)   11.19                80
 09/23/2019   18:31:43   (  -0.01, -75.24) (  -0.19, -75.99)   85.75                80
 09/24/2019   18:15:28   (  -0.01, -75.24) (   0.87, -71.42)  436.32                80
 09/26/2019   06:36:59   (   0.01, -75.26) (   0.29, -76.63)  155.01                80