Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 8 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/06/2019   18:40:10   (   0.03, -75.19) (  -0.58, -77.99)  319.27                80
 08/07/2019   18:23:55   (   0.03, -75.18) (   0.42, -73.42)  201.31                80
 08/09/2019   06:45:27   (  -0.04, -75.18) (   0.76, -78.62)  393.32                80
 08/10/2019   06:23:52   (  -0.04, -75.17) (  -0.29, -74.06)  127.44                80
 08/11/2019   18:45:33   (   0.04, -75.17) (  -0.85, -79.30)  469.86                80
 08/12/2019   18:29:17   (   0.05, -75.18) (   0.14, -74.72)   51.31                80
 08/15/2019   06:31:55   (  -0.05, -75.18) (  -0.02, -75.37)   20.60                80
 08/17/2019   18:32:00   (   0.06, -75.20) (  -0.13, -76.03)   94.47                80
 08/18/2019   18:15:44   (   0.06, -75.22) (   0.87, -71.46)  427.82                80
 08/20/2019   06:37:18   (  -0.06, -75.23) (   0.24, -76.68)  164.00                80