Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/12/2019   22:48:53   (  -0.01,-137.21) (  -0.67,-140.21)  341.34                80
 11/13/2019   22:32:37   (  -0.01,-137.21) (   0.35,-135.63)  179.64                80
 11/15/2019   10:54:09   (   0.01,-137.20) (   0.83,-140.83)  414.30                80
 11/16/2019   10:32:33   (   0.01,-137.19) (  -0.19,-136.26)  105.93                80
 11/17/2019   22:54:12   (  -0.01,-137.17) (  -1.00,-141.49)  493.37                80
 11/18/2019   22:37:58   (  -0.01,-137.15) (   0.07,-136.93)   26.63                80
 11/21/2019   10:40:34   (   0.00,-137.12) (   0.10,-137.55)   49.26                80
 11/22/2019   10:18:58   (   0.00,-137.10) (  -0.92,-132.98)  470.16                80
 11/23/2019   22:40:38   (  -0.00,-137.07) (  -0.26,-138.21)  130.04                80
 11/24/2019   22:24:22   (  -0.00,-137.05) (   0.76,-133.64)  389.18                80