Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 10 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/26/2019   10:30:05   (  -0.00,-137.20) (  -0.32,-135.66)  174.62                80
 10/27/2019   22:51:46   (   0.00,-137.20) (  -0.85,-140.90)  422.97                80
 10/28/2019   22:35:31   (  -0.00,-137.19) (   0.22,-136.34)   97.84                80
 10/30/2019   10:54:21   (   0.00,-137.18) (   1.00,-141.53)  496.51                80
 10/31/2019   10:38:07   (   0.00,-137.17) (  -0.07,-136.97)   23.96                80
 11/02/2019   22:38:12   (   0.01,-137.15) (  -0.07,-137.64)   55.23                80
 11/03/2019   22:21:56   (   0.02,-137.13) (   0.94,-133.06)  464.62                80
 11/05/2019   10:40:48   (  -0.02,-137.11) (   0.23,-138.26)  130.99                80
 11/06/2019   10:24:32   (  -0.02,-137.10) (  -0.79,-133.69)  388.66                80
 11/07/2019   22:43:31   (   0.03,-137.07) (  -0.41,-138.92)  210.87                80
 11/08/2019   22:27:17   (   0.03,-137.06) (   0.66,-134.35)  308.64                80