Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 4 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/21/2019   06:24:14   (  -0.00, -75.19) (  -0.27, -74.00)  136.15                80
 04/22/2019   18:45:55   (   0.00, -75.21) (  -0.87, -79.25)  459.97                80
 04/23/2019   18:29:40   (  -0.00, -75.21) (   0.10, -74.67)   61.46                80
 04/26/2019   06:32:19   (   0.00, -75.22) (  -0.00, -75.32)   11.35                80
 04/28/2019   18:32:25   (   0.00, -75.25) (  -0.17, -75.99)   84.19                80
 04/29/2019   18:16:10   (  -0.00, -75.26) (   0.86, -71.42)  438.12                80
 05/01/2019   06:37:42   (  -0.00, -75.28) (   0.31, -76.63)  154.18                80
 05/02/2019   06:16:08   (   0.00, -75.30) (  -0.72, -72.06)  368.33                80
 05/03/2019   18:37:49   (  -0.00, -75.33) (  -0.43, -77.31)  225.80                80
 05/04/2019   18:21:35   (  -0.00, -75.35) (   0.61, -72.75)  297.12                80