Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 5 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/03/2020   10:32:14   (  -0.01,-137.20) (  -0.29,-135.94)  143.32                80
 05/04/2020   22:53:52   (   0.01,-137.19) (  -0.90,-141.16)  453.48                80
 05/05/2020   22:37:37   (   0.01,-137.18) (   0.16,-136.59)   67.79                80
 05/08/2020   10:40:11   (  -0.01,-137.17) (   0.01,-137.20)    4.75                80
 05/10/2020   22:40:14   (   0.01,-137.13) (  -0.15,-137.85)   82.19                80
 05/11/2020   22:23:57   (   0.01,-137.12) (   0.85,-133.27)  438.20                80
 05/13/2020   10:45:27   (  -0.00,-137.10) (   0.31,-138.46)  155.79                80
 05/14/2020   10:23:52   (  -0.00,-137.08) (  -0.75,-133.89)  364.36                80
 05/15/2020   22:45:30   (   0.00,-137.05) (  -0.44,-139.11)  234.89                80
 05/16/2020   22:29:14   (   0.00,-137.03) (   0.56,-134.53)  285.17                80