Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 5 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/01/2019   22:52:44   (   0.01,-137.18) (  -0.85,-141.02)  436.86                80
 06/02/2019   22:36:30   (   0.01,-137.18) (   0.19,-136.45)   84.01                80
 06/05/2019   10:36:26   (  -0.02,-137.19) (  -0.05,-137.09)   11.77                80
 06/07/2019   22:39:12   (   0.01,-137.14) (  -0.14,-137.75)   69.81                80
 06/08/2019   22:22:58   (   0.01,-137.13) (   0.90,-133.19)  450.17                80
 06/10/2019   10:44:29   (  -0.01,-137.13) (   0.29,-138.39)  143.14                80
 06/11/2019   10:22:55   (  -0.00,-137.12) (  -0.75,-133.82)  376.32                80
 06/12/2019   22:44:36   (   0.01,-137.08) (  -0.41,-139.07)  226.38                80
 06/13/2019   22:28:20   (   0.01,-137.06) (   0.57,-134.49)  292.95                80