Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/10/2019   10:48:49   (   0.00,-137.22) (   0.51,-139.55)  265.46                80
 11/11/2019   10:27:13   (   0.00,-137.22) (  -0.51,-134.97)  255.64                80
 11/12/2019   22:48:52   (  -0.00,-137.20) (  -0.69,-140.21)  342.54                80
 11/13/2019   22:32:37   (  -0.00,-137.20) (   0.33,-135.63)  178.12                80
 11/15/2019   10:54:08   (   0.01,-137.19) (   0.85,-140.83)  415.92                80
 11/16/2019   10:32:33   (   0.01,-137.17) (  -0.17,-136.26)  104.09                80
 11/17/2019   22:54:13   (  -0.01,-137.15) (  -0.95,-141.50)  495.97                80
 11/18/2019   22:37:58   (  -0.00,-137.13) (   0.07,-136.93)   23.72                80
 11/21/2019   10:40:33   (   0.00,-137.09) (   0.10,-137.55)   52.65                80
 11/22/2019   10:18:58   (   0.00,-137.07) (  -0.92,-132.98)  466.50                80