Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/21/2019   10:40:34   (  -0.01,-137.18) (   0.09,-137.55)   42.12                80
 11/22/2019   10:18:59   (  -0.01,-137.18) (  -0.98,-132.98)  478.41                80
 11/23/2019   22:40:37   (   0.00,-137.17) (  -0.25,-138.21)  119.10                80
 11/24/2019   22:24:22   (  -0.00,-137.16) (   0.77,-133.63)  401.41                80
 11/26/2019   10:45:53   (   0.01,-137.13) (   0.42,-138.83)  193.83                80
 11/27/2019   10:24:19   (   0.01,-137.12) (  -0.66,-134.27)  325.94                80
 11/28/2019   22:45:57   (  -0.01,-137.10) (  -0.57,-139.49)  273.05                80
 11/29/2019   22:29:42   (  -0.01,-137.08) (   0.45,-134.91)  246.44                80
 12/01/2019   10:51:14   (   0.01,-137.05) (   0.68,-140.13)  349.87                80
 12/02/2019   10:29:39   (   0.00,-137.03) (  -0.34,-135.55)  169.24                80
 12/03/2019   22:53:57   (  -0.01,-137.00) (  -0.87,-140.77)  430.44                80