Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/28/2019   06:37:35   (   0.01, -75.19) (   0.49, -77.32)  241.79                80
 06/29/2019   06:18:40   (  -0.02, -75.19) (  -0.56, -72.75)  278.41                80
 06/30/2019   18:40:22   (   0.02, -75.20) (  -0.59, -78.00)  318.54                80
 07/01/2019   18:24:06   (   0.02, -75.20) (   0.40, -73.42)  202.64                80
 07/03/2019   06:45:39   (  -0.02, -75.20) (   0.74, -78.63)  391.12                80
 07/04/2019   06:26:44   (  -0.01, -75.20) (  -0.30, -74.07)  130.25                80
 07/05/2019   18:45:44   (   0.01, -75.21) (  -0.89, -79.30)  465.97                80
 07/06/2019   18:29:29   (  -0.00, -75.22) (   0.09, -74.73)   55.93                80
 07/09/2019   06:32:07   (   0.01, -75.24) (   0.01, -75.37)   14.69                80
 07/11/2019   18:32:12   (  -0.01, -75.27) (  -0.21, -76.03)   87.09                80