Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 5 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/02/2020   10:53:50   (  -0.01,-137.20) (   0.73,-140.52)  378.07                80
 05/03/2020   10:32:14   (  -0.01,-137.20) (  -0.27,-135.93)  143.38                80
 05/04/2020   22:53:53   (   0.01,-137.18) (  -0.86,-141.17)  453.81                80
 05/05/2020   22:37:37   (   0.01,-137.18) (   0.14,-136.59)   67.37                80
 05/08/2020   10:37:31   (  -0.01,-137.16) (  -0.03,-137.21)    5.52                80
 05/10/2020   22:40:13   (   0.01,-137.12) (  -0.16,-137.85)   82.93                80
 05/11/2020   22:23:58   (   0.01,-137.11) (   0.90,-133.28)  437.39                80
 05/13/2020   10:45:27   (  -0.00,-137.09) (   0.33,-138.46)  156.50                80
 05/14/2020   10:23:52   (  -0.00,-137.07) (  -0.73,-133.89)  363.61                80
 05/15/2020   22:45:30   (   0.00,-137.04) (  -0.46,-139.11)  235.95                80