Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/05/2020   10:54:03   (  -0.00,-137.18) (   0.71,-140.30)  355.65                80
 08/06/2020   10:32:27   (  -0.00,-137.18) (  -0.30,-135.71)  166.49                80
 08/07/2020   22:54:05   (   0.00,-137.18) (  -0.85,-140.94)  429.10                80
 08/08/2020   22:37:48   (   0.00,-137.18) (   0.17,-136.36)   92.90                80
 08/10/2020   10:59:19   (  -0.00,-137.18) (   1.00,-141.55)  499.33                80
 08/11/2020   10:37:42   (  -0.00,-137.17) (  -0.02,-136.97)   22.34                80
 08/13/2020   22:40:24   (  -0.00,-137.15) (  -0.11,-137.62)   53.64                80
 08/14/2020   22:24:08   (  -0.00,-137.14) (   0.91,-133.04)  467.19                80
 08/16/2020   10:45:38   (   0.00,-137.12) (   0.26,-138.23)  126.91                80
 08/17/2020   10:24:02   (   0.00,-137.10) (  -0.76,-133.65)  393.31                80