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)
 08/30/2019   22:49:35   (   0.02,-137.20) (  -0.67,-140.36)  359.11                80
 08/31/2019   22:33:20   (   0.02,-137.20) (   0.33,-135.78)  161.80                80
 09/02/2019   10:54:52   (  -0.02,-137.20) (   0.82,-140.99)  432.23                80
 09/03/2019   10:33:17   (  -0.02,-137.19) (  -0.18,-136.41)   88.35                80
 09/05/2019   22:38:42   (   0.03,-137.17) (   0.07,-137.09)   10.31                80
 09/08/2019   10:41:19   (  -0.03,-137.15) (   0.07,-137.73)   65.33                80
 09/09/2019   10:19:44   (  -0.03,-137.14) (  -0.92,-133.15)  454.41                80
 09/10/2019   22:41:24   (   0.03,-137.11) (  -0.25,-138.39)  145.21                80
 09/11/2019   22:25:09   (   0.03,-137.10) (   0.75,-133.81)  374.31                80