Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/02/2019   22:38:12   (  -0.01,-137.20) (  -0.09,-137.63)   48.04                80
 11/03/2019   22:21:56   (  -0.01,-137.20) (   0.93,-133.05)  472.90                80
 11/05/2019   10:40:48   (   0.00,-137.20) (   0.24,-138.26)  120.24                80
 11/06/2019   10:24:32   (   0.00,-137.20) (  -0.77,-133.68)  400.46                80
 11/07/2019   22:43:32   (  -0.00,-137.18) (  -0.38,-138.92)  198.30                80
 11/08/2019   22:27:17   (  -0.00,-137.17) (   0.63,-134.35)  322.20                80
 11/10/2019   10:46:08   (   0.00,-137.17) (   0.55,-139.55)  271.77                80
 11/11/2019   10:29:53   (   0.00,-137.15) (  -0.46,-134.97)  248.34                80
 11/12/2019   22:48:53   (  -0.00,-137.13) (  -0.68,-140.21)  351.56                80
 11/13/2019   22:32:38   (  -0.00,-137.11) (   0.33,-135.64)  167.97                80