Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 5 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/27/2019   22:47:20   (  -0.01,-137.18) (  -0.58,-139.70)  287.80                80
 05/28/2019   22:31:06   (  -0.01,-137.17) (   0.46,-135.14)  232.78                80
 05/30/2019   10:52:37   (   0.01,-137.19) (   0.73,-140.34)  359.54                80
 05/31/2019   10:31:03   (   0.01,-137.17) (  -0.31,-135.77)  160.22                80
 06/01/2019   22:52:44   (   0.00,-137.13) (  -0.86,-141.02)  442.42                80
 06/02/2019   22:36:30   (   0.00,-137.12) (   0.18,-136.45)   77.09                80
 06/05/2019   10:39:06   (  -0.00,-137.10) (  -0.03,-137.08)    3.01                80
 06/07/2019   22:39:12   (  -0.00,-137.01) (  -0.16,-137.75)   83.77                80
 06/08/2019   22:22:57   (  -0.01,-136.99) (   0.82,-133.17)  434.77                80