Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 11 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/06/2020   22:32:18   (  -0.02,-137.23) (   0.57,-134.72)  287.01                80
 11/08/2020   10:51:07   (   0.01,-137.23) (   0.63,-139.89)  303.77                80
 11/09/2020   10:34:50   (   0.01,-137.23) (  -0.40,-135.31)  218.63                80
 11/10/2020   22:53:49   (  -0.01,-137.23) (  -0.75,-140.54)  377.11                80
 11/11/2020   22:37:32   (  -0.01,-137.23) (   0.29,-135.96)  145.11                80
 11/13/2020   10:56:21   (   0.01,-137.23) (   0.86,-141.15)  446.50                80
 11/14/2020   10:40:04   (   0.01,-137.22) (  -0.11,-136.56)   75.25                80
 11/16/2020   22:42:46   (  -0.01,-137.19) (   0.01,-137.20)    2.79                80
 11/19/2020   10:45:18   (   0.01,-137.17) (   0.17,-137.80)   72.87                80