Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 7 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/02/2020   22:36:10   (  -0.01,-137.19) (   0.08,-136.72)   53.73                80
 07/05/2020   10:41:24   (  -0.00,-137.18) (   0.04,-137.33)   17.20                80
 07/07/2020   22:41:27   (   0.01,-137.16) (  -0.17,-137.99)   93.56                80
 07/08/2020   22:25:10   (   0.01,-137.16) (   0.85,-133.40)  427.66                80
 07/10/2020   10:46:41   (  -0.01,-137.15) (   0.29,-138.60)  164.79                80
 07/11/2020   10:25:04   (  -0.01,-137.14) (  -0.72,-134.02)  356.27                80
 07/12/2020   22:46:43   (   0.00,-137.12) (  -0.46,-139.24)  241.79                80
 07/13/2020   22:30:26   (   0.01,-137.11) (   0.55,-134.66)  278.84                80
 07/15/2020   10:51:56   (  -0.01,-137.09) (   0.59,-139.86)  314.80                80