Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 11 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/08/2020   10:51:07   (   0.01,-137.23) (   0.61,-139.90)  303.92                80
 11/09/2020   10:34:51   (   0.01,-137.23) (  -0.43,-135.32)  218.42                80
 11/10/2020   22:53:49   (  -0.01,-137.23) (  -0.72,-140.54)  377.38                80
 11/11/2020   22:37:31   (  -0.01,-137.23) (   0.26,-135.95)  144.80                80
 11/13/2020   10:56:21   (   0.01,-137.22) (   0.89,-141.14)  446.90                80
 11/14/2020   10:40:04   (   0.01,-137.22) (  -0.14,-136.56)   74.75                80
 11/16/2020   22:40:05   (  -0.01,-137.19) (  -0.01,-137.20)    1.11                80
 11/19/2020   10:45:18   (   0.01,-137.16) (   0.13,-137.81)   73.55                80
 11/20/2020   10:23:40   (   0.01,-137.14) (  -0.85,-133.21)  447.13                80