Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 8 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/29/2019   10:27:55   (  -0.04,-137.20) (  -0.52,-135.12)  238.01                80
 08/30/2019   22:49:36   (   0.04,-137.20) (  -0.65,-140.36)  359.54                80
 08/31/2019   22:33:20   (   0.03,-137.20) (   0.35,-135.78)  161.30                80
 09/02/2019   10:54:52   (  -0.03,-137.19) (   0.79,-141.00)  432.84                80
 09/03/2019   10:33:17   (  -0.04,-137.19) (  -0.21,-136.42)   87.66                80
 09/05/2019   22:38:42   (   0.04,-137.17) (   0.04,-137.08)    9.53                80
 09/08/2019   10:41:19   (  -0.05,-137.14) (   0.10,-137.72)   66.37                80
 09/09/2019   10:19:44   (  -0.05,-137.13) (  -0.96,-133.15)  453.26                80
 09/10/2019   22:41:24   (   0.05,-137.11) (  -0.21,-138.40)  146.52                80
 09/11/2019   22:25:09   (   0.05,-137.09) (   0.78,-133.82)  372.93                80