Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 4 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/22/2020   10:43:15   (  -0.02,-137.20) (   0.18,-137.98)   89.98                80
 04/23/2020   10:21:40   (  -0.02,-137.20) (  -0.87,-133.41)  431.77                80
 04/24/2020   22:43:18   (   0.02,-137.20) (  -0.31,-138.64)  164.37                80
 04/25/2020   22:27:03   (   0.02,-137.19) (   0.74,-134.06)  356.95                80
 04/27/2020   10:48:33   (  -0.01,-137.18) (   0.44,-139.26)  236.48                80
 04/28/2020   10:26:57   (  -0.01,-137.17) (  -0.55,-134.67)  284.21                80
 04/29/2020   22:48:35   (   0.01,-137.15) (  -0.63,-139.90)  313.74                80
 04/30/2020   22:32:19   (   0.01,-137.13) (   0.43,-135.33)  206.63                80
 05/02/2020   10:53:50   (  -0.00,-137.11) (   0.75,-140.52)  387.97                80
 05/03/2020   10:32:13   (  -0.00,-137.09) (  -0.25,-135.93)  132.00                80