Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 11 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/13/2020   10:56:21   (   0.01,-137.24) (   0.90,-141.14)  444.90                80
 11/14/2020   10:40:04   (   0.02,-137.23) (  -0.14,-136.56)   77.20                80
 11/16/2020   22:42:45   (  -0.02,-137.22) (  -0.01,-137.19)    2.59                80
 11/19/2020   10:42:38   (   0.01,-137.19) (   0.13,-137.80)   69.04                80
 11/20/2020   10:26:20   (   0.01,-137.18) (  -0.85,-133.21)  452.12                80
 11/21/2020   22:45:19   (  -0.01,-137.16) (  -0.27,-138.44)  145.18                80
 11/22/2020   22:29:01   (  -0.01,-137.15) (   0.72,-133.85)  375.93                80
 11/24/2020   10:47:50   (   0.01,-137.13) (   0.44,-139.04)  217.44                80
 11/25/2020   10:31:34   (   0.01,-137.12) (  -0.60,-134.46)  303.41                80