Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 9 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/15/2019   06:45:11   (   0.01, -75.19) (   0.78, -78.58)  386.91                80
 09/16/2019   06:23:36   (   0.01, -75.19) (  -0.28, -74.02)  134.46                80
 09/17/2019   18:45:16   (  -0.01, -75.20) (  -0.91, -79.26)  462.23                80
 09/18/2019   18:29:01   (  -0.01, -75.21) (   0.09, -74.68)   59.45                80
 09/21/2019   06:31:38   (   0.01, -75.22) (   0.02, -75.32)   11.24                80
 09/23/2019   18:31:43   (  -0.01, -75.24) (  -0.21, -75.98)   85.90                80
 09/24/2019   18:15:28   (  -0.01, -75.24) (   0.85, -71.42)  436.15                80
 09/26/2019   06:36:59   (   0.02, -75.26) (   0.32, -76.62)  155.30                80
 09/27/2019   06:15:24   (   0.02, -75.27) (  -0.68, -72.04)  366.95                80