Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 8 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)
 08/10/2019   06:23:52   (  -0.03, -75.17) (  -0.28, -74.05)  127.35                80
 08/11/2019   18:45:32   (   0.04, -75.17) (  -0.87, -79.30)  470.06                80
 08/12/2019   18:29:17   (   0.04, -75.17) (   0.13, -74.72)   50.99                80
 08/15/2019   06:31:55   (  -0.05, -75.18) (  -0.01, -75.36)   21.18                80
 08/17/2019   18:32:00   (   0.05, -75.19) (  -0.15, -76.03)   95.35                80
 08/18/2019   18:15:45   (   0.05, -75.20) (   0.91, -71.46)  426.81                80
 08/20/2019   06:37:17   (  -0.05, -75.22) (   0.26, -76.67)  165.10                80
 08/21/2019   06:15:42   (  -0.05, -75.23) (  -0.73, -72.09)  357.25                80
 08/22/2019   18:37:22   (   0.05, -75.25) (  -0.42, -77.34)  237.85                80
 08/23/2019   18:21:08   (   0.06, -75.27) (   0.64, -72.77)  284.68                80