Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 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)
 05/29/2020   10:42:22   (  -0.00,-137.20) (   0.12,-137.67)   54.18                80
 05/30/2020   10:20:46   (  -0.00,-137.20) (  -0.94,-133.10)  467.34                80
 05/31/2020   22:45:05   (   0.00,-137.18) (  -0.28,-138.32)  129.93                80
 06/01/2020   22:23:29   (   0.00,-137.18) (   0.78,-133.75)  391.28                80
 06/03/2020   10:47:39   (  -0.00,-137.17) (   0.41,-138.93)  201.48                80
 06/04/2020   10:26:03   (  -0.01,-137.16) (  -0.66,-134.36)  319.26                80
 06/05/2020   22:47:41   (   0.00,-137.13) (  -0.56,-139.58)  279.34                80
 06/06/2020   22:31:26   (   0.00,-137.12) (   0.50,-135.01)  241.11                80
 06/08/2020   10:50:15   (   0.00,-137.10) (   0.69,-140.20)  352.72                80
 06/09/2020   10:33:59   (   0.01,-137.08) (  -0.32,-135.61)  167.46                80