Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 5 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/23/2020   10:56:02   (  -0.00,-137.20) (   0.83,-141.00)  432.14                80
 05/24/2020   10:34:25   (  -0.01,-137.20) (  -0.17,-136.41)   89.38                80
 05/26/2020   22:39:48   (   0.01,-137.18) (   0.02,-137.06)   13.45                80
 05/29/2020   10:42:22   (  -0.00,-137.16) (   0.11,-137.68)   59.08                80
 05/30/2020   10:20:46   (  -0.00,-137.14) (  -0.90,-133.09)  461.54                80
 05/31/2020   22:42:25   (   0.00,-137.12) (  -0.26,-138.32)  136.85                80
 06/01/2020   22:26:08   (   0.00,-137.11) (   0.75,-133.74)  383.49                80
 06/03/2020   10:44:58   (  -0.00,-137.08) (   0.44,-138.93)  210.84                80
 06/04/2020   10:28:42   (   0.00,-137.06) (  -0.62,-134.36)  309.12                80