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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/05/2019   10:23:00   (  -0.01,-137.21) (  -0.78,-133.79)  389.52                80
 05/06/2019   22:44:41   (   0.01,-137.19) (  -0.37,-139.04)  210.49                80
 05/07/2019   22:28:26   (   0.01,-137.18) (   0.60,-134.46)  310.15                80
 05/09/2019   10:49:58   (  -0.01,-137.20) (   0.56,-139.67)  282.07                80
 05/10/2019   10:28:24   (  -0.01,-137.19) (  -0.48,-135.10)  237.71                80
 05/11/2019   22:50:05   (   0.00,-137.15) (  -0.68,-140.35)  364.40                80
 05/12/2019   22:33:50   (   0.00,-137.14) (   0.29,-135.77)  155.45                80
 05/14/2019   10:55:22   (  -0.00,-137.15) (   0.86,-140.98)  437.17                80
 05/15/2019   10:33:47   (  -0.00,-137.13) (  -0.17,-136.41)   82.11                80
 05/17/2019   22:36:33   (   0.00,-137.07) (  -0.01,-137.08)    2.32                80