Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 6 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/08/2020   10:52:55   (  -0.00,-137.15) (   0.70,-140.19)  346.42                80
 06/09/2020   10:31:19   (  -0.00,-137.14) (  -0.36,-135.62)  174.07                80
 06/10/2020   22:52:57   (   0.00,-137.12) (  -0.86,-140.84)  424.07                80
 06/11/2020   22:36:42   (   0.00,-137.11) (   0.20,-136.27)   96.45                80
 06/13/2020   10:58:11   (   0.00,-137.09) (   0.97,-141.45)  497.51                80
 06/14/2020   10:36:35   (   0.00,-137.07) (  -0.03,-136.87)   22.67                80
 06/16/2020   22:39:18   (   0.00,-137.02) (  -0.12,-137.52)   56.58                80
 06/17/2020   22:23:02   (   0.01,-137.00) (   0.94,-132.95)  463.15                80
 06/19/2020   10:44:31   (  -0.00,-136.97) (   0.24,-138.13)  132.30                80
 06/20/2020   10:22:55   (  -0.00,-136.94) (  -0.77,-133.55)  386.82                80
 06/21/2020   22:44:33   (  -0.00,-136.90) (  -0.45,-138.77)  214.05                80