Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 3 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/11/2020   10:36:04   (  -0.00,-137.20) (  -0.03,-136.97)   25.76                80
 03/13/2020   22:38:48   (   0.00,-137.21) (  -0.09,-137.63)   48.84                80
 03/14/2020   22:22:33   (   0.00,-137.21) (   0.95,-133.06)  473.02                80
 03/16/2020   10:44:03   (  -0.00,-137.21) (   0.23,-138.25)  118.69                80
 03/17/2020   10:22:27   (  -0.00,-137.21) (  -0.81,-133.68)  402.55                80
 03/18/2020   22:44:07   (   0.01,-137.19) (  -0.35,-138.91)  195.48                80
 03/19/2020   22:27:50   (   0.01,-137.19) (   0.64,-134.33)  325.80                80
 03/21/2020   10:49:21   (  -0.01,-137.19) (   0.50,-139.53)  266.41                80
 03/22/2020   10:27:45   (  -0.01,-137.18) (  -0.49,-134.95)  254.51                80
 03/23/2020   22:49:24   (   0.01,-137.16) (  -0.66,-140.18)  344.29                80
 03/24/2020   22:33:08   (   0.01,-137.15) (   0.33,-135.60)  176.64                80