Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 5 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/30/2019   10:52:38   (  -0.01,-137.19) (   0.68,-140.35)  359.89                80
 05/31/2019   10:31:02   (  -0.01,-137.18) (  -0.30,-135.77)  159.92                80
 06/01/2019   22:52:44   (   0.02,-137.14) (  -0.87,-141.01)  442.38                80
 06/02/2019   22:36:29   (   0.02,-137.12) (   0.17,-136.45)   77.11                80
 06/05/2019   10:36:26   (  -0.02,-137.10) (  -0.03,-137.08)    2.30                80
 06/07/2019   22:39:12   (   0.02,-137.02) (  -0.15,-137.75)   83.51                80
 06/08/2019   22:22:57   (   0.02,-137.00) (   0.90,-133.18)  435.03                80
 06/10/2019   10:44:29   (  -0.02,-136.98) (   0.29,-138.39)  159.69                80
 06/11/2019   10:22:53   (  -0.02,-136.96) (  -0.70,-133.81)  358.37                80