Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 5 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/12/2019   06:26:55   (   0.01, -75.19) (  -0.11, -74.68)   58.58                80
 05/14/2019   18:29:42   (  -0.01, -75.20) (  -0.02, -75.36)   17.47                80
 05/17/2019   06:34:59   (   0.00, -75.22) (   0.19, -75.99)   87.88                80
 05/18/2019   06:13:24   (   0.00, -75.23) (  -0.85, -71.42)  434.04                80
 05/19/2019   18:35:05   (  -0.00, -75.25) (  -0.32, -76.67)  162.07                80
 05/20/2019   18:18:51   (  -0.00, -75.26) (   0.72, -72.10)  360.18                80
 05/22/2019   06:40:23   (  -0.00, -75.28) (   0.43, -77.32)  231.01                80
 05/23/2019   06:18:48   (  -0.01, -75.30) (  -0.55, -72.74)  291.46                80
 05/24/2019   18:40:29   (   0.01, -75.32) (  -0.61, -77.98)  303.88                80
 05/25/2019   18:24:15   (   0.01, -75.34) (   0.43, -73.42)  219.14                80