Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 5 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/24/2020   10:34:26   (  -0.01,-137.20) (  -0.21,-136.42)   89.71                80
 05/26/2020   22:37:09   (   0.01,-137.18) (   0.06,-137.07)   14.09                80
 05/29/2020   10:42:22   (  -0.00,-137.16) (   0.13,-137.67)   58.49                80
 05/30/2020   10:20:46   (  -0.00,-137.15) (  -0.93,-133.10)  462.24                80
 05/31/2020   22:42:25   (   0.00,-137.13) (  -0.29,-138.32)  136.08                80
 06/01/2020   22:26:09   (   0.00,-137.11) (   0.77,-133.75)  384.35                80
 06/03/2020   10:44:58   (  -0.00,-137.09) (   0.42,-138.93)  209.85                80
 06/04/2020   10:28:42   (   0.00,-137.07) (  -0.59,-134.35)  310.15                80
 06/05/2020   22:47:41   (  -0.01,-137.04) (  -0.57,-139.58)  289.37                80