Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 19.  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)   42.55                80
 11/22/2019   10:18:58   (  -0.01,-137.17) (  -0.93,-132.97)  477.71                80
 11/23/2019   22:43:18   (   0.00,-137.16) (  -0.25,-138.21)  120.25                80
 11/24/2019   22:24:22   (   0.00,-137.14) (   0.77,-133.63)  399.93                80
 11/26/2019   10:45:54   (   0.01,-137.12) (   0.42,-138.83)  195.50                80
 11/27/2019   10:24:19   (   0.01,-137.11) (  -0.66,-134.27)  324.07                80
 11/28/2019   22:48:37   (  -0.01,-137.08) (  -0.57,-139.49)  275.27                80
 11/29/2019   22:27:02   (  -0.01,-137.06) (   0.45,-134.92)  244.01                80
 12/01/2019   10:51:14   (   0.01,-137.03) (   0.69,-140.13)  352.46                80
 12/02/2019   10:29:39   (   0.00,-137.01) (  -0.33,-135.55)  166.43                80