Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 9 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/02/2019   10:54:52   (  -0.03,-137.20) (   0.82,-140.99)  431.29                80
 09/03/2019   10:33:16   (  -0.03,-137.20) (  -0.18,-136.41)   89.75                80
 09/05/2019   22:38:42   (   0.03,-137.19) (   0.07,-137.09)   12.23                80
 09/08/2019   10:41:19   (  -0.04,-137.18) (   0.07,-137.72)   61.71                80
 09/09/2019   10:19:44   (  -0.04,-137.17) (  -0.93,-133.15)  458.43                80
 09/10/2019   22:41:24   (   0.04,-137.15) (  -0.24,-138.39)  140.89                80
 09/11/2019   22:25:08   (   0.04,-137.14) (   0.76,-133.81)  379.08                80
 09/13/2019   10:46:41   (  -0.04,-137.13) (   0.37,-139.03)  215.76                80
 09/14/2019   10:25:05   (  -0.04,-137.12) (  -0.63,-134.45)  303.99                80
 09/15/2019   22:46:46   (   0.04,-137.09) (  -0.55,-139.69)  296.09                80