Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/25/2019   18:34:58   (   0.01, -75.20) (  -0.31, -76.69)  168.79                80
 06/26/2019   18:18:43   (   0.01, -75.21) (   0.67, -72.11)  352.28                80
 06/28/2019   06:40:15   (  -0.01, -75.20) (   0.46, -77.32)  241.37                80
 06/29/2019   06:18:41   (  -0.01, -75.20) (  -0.58, -72.76)  279.79                80
 06/30/2019   18:40:21   (   0.01, -75.21) (  -0.62, -77.99)  317.09                80
 07/01/2019   18:24:07   (   0.01, -75.21) (   0.43, -73.43)  204.21                80
 07/03/2019   06:45:38   (  -0.01, -75.22) (   0.77, -78.63)  389.19                80
 07/04/2019   06:24:03   (  -0.01, -75.22) (  -0.27, -74.06)  132.10                80
 07/05/2019   18:45:44   (   0.01, -75.23) (  -0.91, -79.30)  464.38                80
 07/06/2019   18:29:29   (   0.01, -75.24) (   0.14, -74.73)   57.47                80