Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/05/2019   18:16:06   (  -0.00, -75.20) (   0.83, -71.45)  427.43                80
 06/07/2019   06:37:38   (  -0.00, -75.21) (   0.30, -76.67)  165.67                80
 06/08/2019   06:16:02   (  -0.01, -75.21) (  -0.68, -72.09)  355.75                80
 06/09/2019   18:37:44   (   0.01, -75.22) (  -0.49, -77.33)  240.86                80
 06/10/2019   18:21:29   (   0.01, -75.23) (   0.55, -72.77)  281.12                80
 06/12/2019   06:43:02   (  -0.01, -75.25) (   0.57, -77.98)  310.50                80
 06/13/2019   06:21:26   (  -0.01, -75.26) (  -0.41, -73.40)  211.86                80
 06/14/2019   18:45:47   (   0.01, -75.29) (  -0.75, -78.65)  383.44                80
 06/15/2019   18:26:49   (   0.01, -75.30) (   0.29, -74.08)  139.23                76
 06/17/2019   06:48:25   (  -0.02, -75.33) (   0.84, -79.30)  451.47                80
 06/18/2019   06:26:50   (  -0.02, -75.35) (  -0.14, -74.72)   71.45                80