Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 4 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2019   06:45:49   (  -0.00, -75.20) (   0.75, -78.57)  384.28                80
 04/21/2019   06:24:14   (   0.00, -75.20) (  -0.28, -74.00)  136.77                80
 04/22/2019   18:45:55   (  -0.00, -75.21) (  -0.91, -79.24)  459.89                80
 04/23/2019   18:29:40   (  -0.00, -75.21) (   0.12, -74.67)   61.54                80
 04/26/2019   06:32:18   (  -0.00, -75.23) (   0.04, -75.31)   10.26                80
 04/28/2019   18:32:25   (   0.00, -75.26) (  -0.15, -75.99)   83.65                80
 04/29/2019   18:16:10   (   0.00, -75.27) (   0.88, -71.43)  438.74                80
 05/01/2019   06:37:43   (  -0.00, -75.29) (   0.30, -76.63)  152.80                80
 05/02/2019   06:16:08   (  -0.00, -75.31) (  -0.73, -72.07)  369.77                80
 05/03/2019   18:37:50   (   0.00, -75.34) (  -0.41, -77.32)  224.87                80