Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/14/2019   18:43:07   (   0.01, -75.19) (  -0.74, -78.65)  393.13                80
 06/15/2019   18:26:52   (   0.02, -75.19) (   0.25, -74.07)  128.01                80
 06/17/2019   06:48:24   (  -0.02, -75.20) (   0.88, -79.28)  464.61                80
 06/18/2019   06:26:49   (  -0.02, -75.21) (  -0.11, -74.70)   56.76                80
 06/20/2019   18:29:36   (   0.01, -75.22) (  -0.00, -75.39)   18.63                80
 06/23/2019   06:34:51   (   0.00, -75.25) (   0.20, -76.01)   87.20                80
 06/24/2019   06:13:17   (   0.01, -75.26) (  -0.85, -71.44)  435.38                80
 06/25/2019   18:34:58   (  -0.01, -75.28) (  -0.29, -76.69)  160.29                80
 06/26/2019   18:18:43   (  -0.01, -75.30) (   0.70, -72.11)  362.66                80