Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 7 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/05/2020   10:41:24   (  -0.00,-137.18) (   0.05,-137.33)   17.31                80
 07/07/2020   22:41:27   (   0.01,-137.16) (  -0.17,-137.98)   93.69                80
 07/08/2020   22:25:10   (   0.01,-137.15) (   0.84,-133.40)  427.55                80
 07/10/2020   10:46:39   (   0.01,-137.15) (   0.35,-138.59)  164.65                80
 07/11/2020   10:25:03   (   0.01,-137.14) (  -0.66,-134.00)  356.41                80
 07/12/2020   22:46:42   (  -0.01,-137.11) (  -0.46,-139.24)  241.79                80
 07/13/2020   22:30:26   (  -0.01,-137.10) (   0.55,-134.66)  278.72                80
 07/15/2020   10:51:56   (  -0.01,-137.08) (   0.59,-139.86)  315.25                80
 07/16/2020   10:30:20   (  -0.01,-137.07) (  -0.42,-135.27)  204.80                80