Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 10 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/04/2020   22:55:02   (  -0.03,-137.21) (  -0.89,-140.98)  429.83                80
 10/05/2020   22:38:46   (  -0.04,-137.21) (   0.14,-136.40)   92.38                80
 10/07/2020   10:57:35   (   0.03,-137.21) (   1.01,-141.59)  499.12                80
 10/08/2020   10:41:19   (   0.03,-137.20) (  -0.02,-137.01)   22.46                80
 10/10/2020   22:41:21   (  -0.02,-137.18) (  -0.14,-137.65)   54.04                80
 10/11/2020   22:25:04   (  -0.02,-137.16) (   0.89,-133.07)  466.89                80
 10/13/2020   10:43:53   (   0.01,-137.15) (   0.26,-138.26)  126.29                80
 10/14/2020   10:27:37   (   0.01,-137.13) (  -0.77,-133.68)  394.34                80
 10/15/2020   22:46:35   (  -0.01,-137.11) (  -0.41,-138.90)  204.39                80
 10/16/2020   22:30:19   (  -0.01,-137.09) (   0.62,-134.32)  316.02                80
 10/18/2020   10:49:07   (   0.01,-137.06) (   0.59,-139.50)  278.07                80