Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 6 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/03/2020   10:47:38   (   0.00,-137.20) (   0.41,-138.93)  197.91                80
 06/04/2020   10:26:03   (  -0.00,-137.19) (  -0.66,-134.36)  323.66                80
 06/05/2020   22:47:42   (   0.00,-137.19) (  -0.51,-139.59)  273.46                80
 06/06/2020   22:31:26   (   0.01,-137.18) (   0.50,-135.01)  247.82                80
 06/08/2020   10:52:55   (  -0.01,-137.17) (   0.68,-140.20)  344.66                80
 06/09/2020   10:31:18   (  -0.01,-137.16) (  -0.33,-135.61)  176.39                80
 06/10/2020   22:52:58   (   0.01,-137.15) (  -0.83,-140.84)  421.51                80
 06/11/2020   22:36:41   (   0.01,-137.14) (   0.18,-136.26)   99.50                80
 06/13/2020   10:58:11   (  -0.00,-137.13) (   0.99,-141.45)  493.35                80
 06/14/2020   10:36:35   (  -0.00,-137.11) (  -0.07,-136.88)   27.41                80
 06/16/2020   22:39:18   (   0.00,-137.08) (  -0.07,-137.53)   50.94                80