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

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/12/2019   06:34:08   (   0.00, -75.20) (   0.18, -75.93)   83.50                80
 10/13/2019   06:12:33   (   0.00, -75.20) (  -0.89, -71.37)  437.94                80
 10/14/2019   18:34:14   (  -0.00, -75.20) (  -0.30, -76.60)  159.12                80
 10/15/2019   18:17:58   (   0.00, -75.21) (   0.71, -72.03)  362.63                80
 10/17/2019   06:39:30   (   0.00, -75.22) (   0.44, -77.23)  229.15                80
 10/18/2019   06:17:54   (   0.00, -75.23) (  -0.56, -72.66)  292.64                80
 10/19/2019   18:39:34   (  -0.00, -75.23) (  -0.61, -77.90)  304.12                80
 10/20/2019   18:23:19   (  -0.01, -75.24) (   0.39, -73.32)  217.88                80
 10/22/2019   06:44:50   (   0.00, -75.25) (   0.76, -78.52)  373.55                80
 10/23/2019   06:23:16   (   0.00, -75.26) (  -0.30, -73.96)  148.56                80