Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/13/2019   06:21:26   (  -0.00, -75.20) (  -0.43, -73.40)  205.26                80
 06/14/2019   18:43:08   (   0.00, -75.19) (  -0.74, -78.65)  392.88                80
 06/15/2019   18:26:52   (   0.00, -75.20) (   0.25, -74.07)  128.26                80
 06/17/2019   06:48:23   (  -0.01, -75.20) (   0.94, -79.27)  464.38                80
 06/18/2019   06:26:49   (  -0.01, -75.21) (  -0.11, -74.70)   56.89                80
 06/20/2019   18:29:36   (   0.01, -75.22) (  -0.00, -75.39)   18.88                80
 06/23/2019   06:34:53   (  -0.01, -75.25) (   0.14, -76.02)   87.80                80
 06/24/2019   06:13:17   (  -0.01, -75.26) (  -0.84, -71.44)  434.67                80
 06/25/2019   18:34:58   (   0.01, -75.28) (  -0.30, -76.69)  160.99                80
 06/26/2019   18:18:43   (   0.00, -75.29) (   0.69, -72.11)  361.88                80