Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/07/2020   22:54:05   (   0.00,-137.17) (  -0.83,-140.95)  430.36                80
 08/08/2020   22:37:49   (   0.00,-137.17) (   0.18,-136.36)   91.54                80
 08/11/2020   10:37:43   (  -0.00,-137.15) (  -0.03,-136.97)   20.02                80
 08/13/2020   22:40:24   (  -0.00,-137.13) (  -0.10,-137.62)   55.38                80
 08/14/2020   22:24:08   (  -0.01,-137.12) (   0.91,-133.04)  465.38                80
 08/16/2020   10:45:38   (   0.01,-137.09) (   0.26,-138.23)  129.44                80
 08/17/2020   10:24:02   (   0.01,-137.08) (  -0.75,-133.65)  390.72                80
 08/18/2020   22:45:40   (  -0.01,-137.05) (  -0.39,-138.88)  207.52                80
 08/19/2020   22:29:24   (  -0.01,-137.03) (   0.62,-134.30)  312.38                80
 08/21/2020   10:50:54   (   0.01,-137.00) (   0.55,-139.49)  283.53                80