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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/05/2020   22:37:36   (   0.01,-137.20) (   0.13,-136.58)   69.15                80
 05/08/2020   10:40:11   (  -0.01,-137.19) (  -0.02,-137.21)    2.01                80
 05/10/2020   22:40:14   (   0.01,-137.16) (  -0.12,-137.86)   78.67                80
 05/11/2020   22:23:58   (   0.01,-137.15) (   0.88,-133.27)  442.19                80
 05/13/2020   10:45:28   (  -0.01,-137.14) (   0.28,-138.47)  151.09                80
 05/14/2020   10:23:52   (  -0.00,-137.13) (  -0.72,-133.88)  369.49                80
 05/15/2020   22:45:31   (   0.00,-137.10) (  -0.42,-139.12)  229.11                80
 05/16/2020   22:29:14   (   0.00,-137.09) (   0.58,-134.53)  291.40                80
 05/18/2020   10:50:45   (  -0.00,-137.07) (   0.58,-139.73)  302.33                80