Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/04/2020   22:08:50   (   0.35,-128.44) (  -0.03,-130.17)  196.58                80
 03/05/2020   21:52:33   (   0.35,-128.43) (   0.96,-125.58)  324.38                80
 03/07/2020   10:14:04   (  -0.34,-128.40) (   0.21,-130.78)  271.22                80
 03/08/2020   09:52:28   (  -0.34,-128.39) (  -0.83,-126.20)  249.16                80
 03/09/2020   22:14:07   (   0.33,-128.39) (  -0.34,-131.43)  347.29                80
 03/10/2020   21:57:52   (   0.34,-128.38) (   0.70,-126.86)  173.15                80
 03/12/2020   10:19:22   (  -0.33,-128.34) (   0.48,-132.06)  422.69                80
 03/13/2020   09:57:46   (  -0.33,-128.33) (  -0.50,-127.47)   97.17                80
 03/15/2020   22:00:30   (   0.33,-128.30) (   0.39,-128.13)   19.74                80