Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 11 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/14/2020   10:40:04   (   0.02,-137.23) (  -0.16,-136.56)   77.35                80
 11/16/2020   22:42:45   (  -0.02,-137.22) (   0.00,-137.20)    3.19                80
 11/19/2020   10:42:37   (   0.01,-137.19) (   0.17,-137.79)   68.80                80
 11/20/2020   10:26:21   (   0.01,-137.18) (  -0.87,-133.21)  452.39                80
 11/21/2020   22:45:18   (  -0.01,-137.16) (  -0.31,-138.43)  144.82                80
 11/22/2020   22:29:01   (  -0.01,-137.15) (   0.73,-133.85)  376.30                80
 11/24/2020   10:47:51   (   0.01,-137.13) (   0.44,-139.04)  217.06                80
 11/25/2020   10:31:34   (   0.01,-137.12) (  -0.60,-134.46)  303.82                80
 11/26/2020   22:50:32   (  -0.00,-137.10) (  -0.57,-139.68)  293.88                80