Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 2 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/27/2020   22:25:33   (  -0.01,-137.22) (   0.76,-133.81)  387.98                80
 02/29/2020   10:47:03   (   0.01,-137.21) (   0.41,-139.01)  204.77                80
 03/01/2020   10:25:28   (   0.02,-137.21) (  -0.63,-134.43)  316.36                80
 03/02/2020   22:47:07   (  -0.02,-137.19) (  -0.56,-139.66)  281.23                80
 03/03/2020   22:30:52   (  -0.02,-137.19) (   0.48,-135.09)  239.40                80
 03/05/2020   10:52:22   (   0.01,-137.17) (   0.69,-140.29)  355.15                80
 03/06/2020   10:30:46   (   0.01,-137.15) (  -0.29,-135.70)  164.83                80
 03/07/2020   22:52:25   (  -0.01,-137.12) (  -0.89,-140.93)  434.41                80
 03/08/2020   22:36:09   (  -0.00,-137.11) (   0.16,-136.36)   85.33                80
 03/11/2020   10:36:04   (   0.00,-137.06) (  -0.01,-136.98)    9.37                80