Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/24/2020   22:31:58   (  -0.04,-137.18) (   0.32,-135.54)  187.33                80
 08/26/2020   10:56:08   (   0.04,-137.21) (   0.84,-140.73)  401.97                80
 08/27/2020   10:34:32   (   0.03,-137.22) (  -0.18,-136.15)  120.99                80
 08/28/2020   22:56:10   (  -0.03,-137.22) (  -0.97,-141.38)  474.47                80
 08/29/2020   22:39:55   (  -0.01,-137.23) (   0.11,-136.81)   48.06                80
 09/01/2020   10:39:49   (  -0.00,-137.25) (   0.03,-137.42)   19.90                80
 09/03/2020   22:42:30   (   0.00,-137.25) (  -0.16,-138.07)   93.16                80
 09/04/2020   22:26:14   (   0.00,-137.25) (   0.86,-133.49)  429.25                80
 09/06/2020   10:45:04   (  -0.00,-137.26) (   0.29,-138.68)  161.56                80