Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 7 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/28/2019   10:33:31   (  -0.03,-137.20) (  -0.19,-136.44)   87.01                80
 07/30/2019   22:38:56   (   0.03,-137.19) (   0.03,-137.10)    9.12                80
 08/02/2019   10:38:54   (  -0.04,-137.16) (   0.10,-137.75)   66.44                80
 08/03/2019   10:22:39   (  -0.04,-137.15) (  -0.95,-133.18)  453.37                80
 08/04/2019   22:41:38   (   0.04,-137.13) (  -0.25,-138.41)  146.32                80
 08/05/2019   22:25:24   (   0.04,-137.12) (   0.80,-133.85)  373.38                80
 08/07/2019   10:44:16   (  -0.05,-137.10) (   0.38,-139.05)  222.50                80
 08/08/2019   10:28:01   (  -0.05,-137.08) (  -0.62,-134.48)  296.75                80
 08/09/2019   22:47:01   (   0.05,-137.05) (  -0.52,-139.72)  304.13                80