Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/24/2019   06:13:17   (   0.00, -75.20) (  -0.81, -71.43)  428.41                80
 06/25/2019   18:34:58   (  -0.01, -75.21) (  -0.34, -76.68)  167.75                80
 06/26/2019   18:18:44   (  -0.01, -75.22) (   0.71, -72.12)  354.10                80
 06/28/2019   06:40:15   (   0.00, -75.23) (   0.49, -77.32)  238.66                80
 06/29/2019   06:18:40   (  -0.00, -75.23) (  -0.56, -72.75)  283.00                80
 06/30/2019   18:40:22   (   0.02, -75.25) (  -0.59, -78.00)  313.14                80
 07/01/2019   18:24:06   (   0.02, -75.26) (   0.40, -73.42)  208.91                80
 07/03/2019   06:45:38   (  -0.01, -75.27) (   0.74, -78.63)  383.29                80
 07/04/2019   06:24:04   (  -0.01, -75.28) (  -0.30, -74.07)  138.91                80
 07/05/2019   18:45:44   (   0.00, -75.30) (  -0.88, -79.31)  456.40                80
 07/06/2019   18:29:29   (  -0.00, -75.31) (   0.11, -74.73)   66.37                80