Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 5 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/08/2020   10:37:31   (  -0.02,-137.20) (  -0.03,-137.21)    1.94                80
 05/10/2020   22:40:14   (   0.01,-137.19) (  -0.11,-137.86)   75.42                80
 05/11/2020   22:23:58   (   0.01,-137.19) (   0.89,-133.27)  446.20                80
 05/13/2020   10:45:28   (  -0.01,-137.18) (   0.27,-138.47)  146.28                80
 05/14/2020   10:23:52   (  -0.01,-137.18) (  -0.73,-133.88)  375.03                80
 05/15/2020   22:45:31   (   0.00,-137.17) (  -0.41,-139.12)  222.04                80
 05/16/2020   22:29:15   (   0.00,-137.16) (   0.58,-134.54)  299.20                80
 05/18/2020   10:50:45   (  -0.00,-137.15) (   0.57,-139.73)  293.68                80
 05/19/2020   10:29:08   (  -0.00,-137.14) (  -0.43,-135.15)  227.15                80
 05/20/2020   22:50:48   (   0.00,-137.12) (  -0.71,-140.38)  371.12                80
 05/21/2020   22:34:31   (   0.00,-137.11) (   0.29,-135.80)  149.38                80