Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/30/2019   18:40:21   (   0.02, -75.20) (  -0.61, -77.99)  318.35                80
 07/01/2019   18:24:07   (   0.02, -75.20) (   0.44, -73.43)  202.83                80
 07/03/2019   06:45:38   (  -0.02, -75.20) (   0.76, -78.63)  390.86                80
 07/04/2019   06:24:04   (  -0.02, -75.20) (  -0.28, -74.06)  130.46                80
 07/05/2019   18:45:44   (   0.01, -75.21) (  -0.91, -79.30)  465.77                80
 07/06/2019   18:29:28   (   0.00, -75.22) (   0.09, -74.72)   56.20                80
 07/09/2019   06:32:06   (   0.01, -75.24) (   0.01, -75.37)   14.28                80
 07/11/2019   18:32:11   (  -0.00, -75.27) (  -0.20, -76.03)   86.71                80
 07/12/2019   18:15:57   (  -0.00, -75.29) (   0.85, -71.46)  435.91                80