Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/13/2020   22:40:24   (  -0.02,-137.18) (  -0.14,-137.61)   49.03                80
 08/14/2020   22:24:08   (   0.02,-137.18) (   0.94,-133.04)  472.07                80
 08/16/2020   10:45:38   (  -0.01,-137.18) (   0.23,-138.23)  120.14                80
 08/17/2020   10:24:02   (  -0.01,-137.18) (  -0.79,-133.65)  401.49                80
 08/18/2020   22:45:40   (   0.01,-137.17) (  -0.36,-138.88)  194.96                80
 08/19/2020   22:29:24   (   0.00,-137.16) (   0.66,-134.30)  326.36                80
 08/21/2020   10:50:54   (  -0.00,-137.15) (   0.51,-139.49)  266.98                80
 08/22/2020   10:29:18   (  -0.00,-137.14) (  -0.51,-134.91)  253.97                80
 08/23/2020   22:50:55   (   0.00,-137.12) (  -0.69,-140.13)  343.57                80
 08/24/2020   22:34:38   (   0.00,-137.10) (   0.33,-135.54)  177.01                80