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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/17/2019   22:54:13   (  -0.00,-137.21) (  -0.95,-141.50)  489.04                80
 11/18/2019   22:37:58   (   0.00,-137.20) (   0.06,-136.92)   31.50                80
 11/21/2019   10:40:35   (  -0.01,-137.18) (   0.05,-137.56)   42.86                80
 11/22/2019   10:18:59   (  -0.01,-137.17) (  -0.96,-132.98)  477.41                80
 11/23/2019   22:40:38   (   0.01,-137.15) (  -0.22,-138.22)  120.73                80
 11/24/2019   22:24:23   (   0.00,-137.14) (   0.80,-133.64)  399.39                80
 11/26/2019   10:45:54   (   0.01,-137.12) (   0.39,-138.84)  196.01                80
 11/27/2019   10:24:19   (   0.01,-137.10) (  -0.62,-134.26)  323.46                80
 11/28/2019   22:48:38   (  -0.01,-137.08) (  -0.55,-139.50)  276.05                80
 11/29/2019   22:27:03   (  -0.01,-137.06) (   0.47,-134.92)  243.14                80
 12/01/2019   10:51:15   (   0.01,-137.03) (   0.68,-140.13)  353.32                80