Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 11 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)
 11/03/2020   10:45:53   (   0.02,-137.22) (   0.37,-138.65)  163.61                80
 11/04/2020   10:29:36   (   0.02,-137.22) (  -0.67,-134.07)  358.49                80
 11/05/2020   22:48:34   (  -0.02,-137.20) (  -0.49,-139.29)  238.18                80
 11/06/2020   22:32:18   (  -0.02,-137.20) (   0.55,-134.71)  283.44                80
 11/08/2020   10:51:07   (   0.01,-137.19) (   0.60,-139.90)  308.90                80
 11/09/2020   10:34:50   (   0.01,-137.18) (  -0.38,-135.31)  212.32                80
 11/10/2020   22:53:48   (  -0.01,-137.16) (  -0.77,-140.54)  385.47                80
 11/11/2020   22:37:32   (  -0.01,-137.14) (   0.27,-135.96)  135.54                80
 11/13/2020   10:56:20   (   0.01,-137.13) (   0.94,-141.13)  457.67                80
 11/14/2020   10:40:03   (   0.01,-137.11) (  -0.10,-136.56)   62.86                80