Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/01/2020   10:42:28   (   0.04,-137.20) (   0.06,-137.41)   24.01                80
 09/02/2020   10:23:31   (   0.04,-137.19) (  -0.96,-132.83)  497.86                80
 09/03/2020   22:42:28   (  -0.04,-137.18) (  -0.25,-138.05)   99.12                80
 09/04/2020   22:26:12   (  -0.04,-137.18) (   0.77,-133.46)  422.48                80
 09/06/2020   10:45:02   (   0.04,-137.17) (   0.37,-138.66)  169.70                80
 09/07/2020   10:28:46   (   0.04,-137.16) (  -0.65,-134.08)  351.46                80
 09/08/2020   22:47:44   (  -0.03,-137.14) (  -0.50,-139.31)  246.80                80
 09/09/2020   22:31:28   (  -0.03,-137.12) (   0.52,-134.73)  273.83                80
 09/11/2020   10:50:17   (   0.02,-137.11) (   0.67,-139.91)  319.96                80
 09/12/2020   10:34:01   (   0.02,-137.09) (  -0.35,-135.33)  200.04                80