Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/05/2020   10:54:03   (  -0.00,-137.18) (   0.70,-140.30)  355.95                80
 08/06/2020   10:32:27   (  -0.00,-137.18) (  -0.32,-135.72)  166.18                80
 08/07/2020   22:54:05   (   0.00,-137.18) (  -0.83,-140.95)  429.28                80
 08/08/2020   22:37:49   (   0.00,-137.18) (   0.18,-136.36)   92.72                80
 08/10/2020   10:59:19   (  -0.00,-137.17) (   0.98,-141.56)  499.58                80
 08/11/2020   10:37:43   (  -0.00,-137.17) (  -0.03,-136.97)   21.96                80
 08/13/2020   22:40:24   (   0.00,-137.15) (  -0.09,-137.62)   53.83                80
 08/14/2020   22:24:08   (  -0.00,-137.14) (   0.92,-133.04)  467.00                80
 08/16/2020   10:45:38   (   0.00,-137.12) (   0.25,-138.23)  127.18                80
 08/17/2020   10:24:02   (   0.00,-137.10) (  -0.77,-133.65)  393.04                80
 08/18/2020   22:45:39   (   0.00,-137.07) (  -0.43,-138.87)  205.64                80