Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 9 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/03/2019   10:33:16   (  -0.02,-137.20) (  -0.17,-136.41)   90.03                80
 09/05/2019   22:38:42   (   0.02,-137.19) (   0.06,-137.09)   12.31                80
 09/08/2019   10:41:19   (  -0.02,-137.18) (   0.08,-137.72)   61.40                80
 09/09/2019   10:19:44   (  -0.02,-137.17) (  -0.92,-133.15)  458.75                80
 09/10/2019   22:41:24   (   0.02,-137.15) (  -0.26,-138.39)  140.77                80
 09/11/2019   22:25:08   (   0.02,-137.14) (   0.74,-133.81)  379.20                80
 09/13/2019   10:44:01   (  -0.02,-137.13) (   0.39,-139.02)  215.44                80
 09/14/2019   10:27:45   (  -0.02,-137.12) (  -0.61,-134.44)  304.33                80
 09/15/2019   22:46:45   (   0.02,-137.09) (  -0.57,-139.68)  295.99                80
 09/16/2019   22:30:30   (   0.02,-137.07) (   0.43,-135.11)  223.44                80