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)
 05/31/2019   10:31:03   (  -0.01,-137.20) (  -0.34,-135.78)  162.76                80
 06/01/2019   22:52:44   (   0.01,-137.18) (  -0.83,-141.02)  437.12                80
 06/02/2019   22:36:29   (   0.01,-137.18) (   0.15,-136.44)   83.78                80
 06/05/2019   10:36:27   (  -0.02,-137.19) (  -0.07,-137.09)   12.48                80
 06/07/2019   22:39:13   (   0.01,-137.14) (  -0.11,-137.76)   69.85                80
 06/08/2019   22:22:57   (   0.01,-137.13) (   0.87,-133.18)  450.13                80
 06/10/2019   10:44:29   (  -0.00,-137.14) (   0.26,-138.39)  142.69                80
 06/11/2019   10:22:54   (   0.00,-137.12) (  -0.73,-133.81)  376.82                80
 06/12/2019   22:44:35   (   0.00,-137.07) (  -0.43,-139.06)  226.27                80
 06/13/2019   22:28:20   (   0.01,-137.06) (   0.55,-134.48)  293.07                80