Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 4 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/28/2020   10:26:57   (  -0.02,-137.21) (  -0.60,-134.68)  288.28                80
 04/29/2020   22:51:16   (   0.01,-137.20) (  -0.59,-139.90)  308.09                80
 04/30/2020   22:32:19   (   0.01,-137.20) (   0.40,-135.32)  213.67                80
 05/02/2020   10:53:51   (  -0.01,-137.20) (   0.72,-140.52)  378.18                80
 05/03/2020   10:32:14   (  -0.01,-137.20) (  -0.28,-135.94)  143.20                80
 05/04/2020   22:53:52   (   0.01,-137.18) (  -0.91,-141.16)  454.35                80
 05/05/2020   22:37:37   (   0.01,-137.17) (   0.14,-136.59)   66.73                80
 05/08/2020   10:37:32   (  -0.01,-137.16) (  -0.02,-137.21)    6.02                80
 05/10/2020   22:40:14   (   0.00,-137.11) (  -0.18,-137.85)   84.14                80
 05/11/2020   22:23:58   (   0.00,-137.10) (   0.88,-133.28)  436.09                80