Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 5 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/17/2019   06:34:59   (   0.00, -75.20) (   0.15, -76.00)   90.06                80
 05/18/2019   06:13:24   (   0.00, -75.21) (  -0.83, -71.42)  431.50                80
 05/19/2019   18:35:05   (   0.00, -75.22) (  -0.35, -76.66)  165.08                80
 05/20/2019   18:18:50   (   0.00, -75.23) (   0.69, -72.10)  356.80                80
 05/22/2019   06:40:23   (  -0.01, -75.25) (   0.45, -77.31)  235.10                80
 05/23/2019   06:18:48   (  -0.01, -75.26) (  -0.58, -72.74)  286.95                80
 05/24/2019   18:40:30   (   0.01, -75.28) (  -0.59, -77.99)  308.77                80
 05/25/2019   18:24:15   (   0.01, -75.29) (   0.44, -73.42)  213.90                80
 05/27/2019   06:45:47   (  -0.02, -75.32) (   0.69, -78.63)  376.43                80
 05/28/2019   06:24:12   (  -0.02, -75.34) (  -0.28, -74.05)  146.54                80