Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 8 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/30/2019   10:11:02   (   0.38,-128.39) (   0.72,-130.04)  188.36                80
 08/31/2019   09:49:26   (   0.37,-128.37) (  -0.28,-125.47)  331.36                80
 09/01/2019   22:11:07   (  -0.37,-128.34) (  -0.89,-130.71)  268.97                80
 09/02/2019   21:54:51   (  -0.37,-128.33) (   0.11,-126.13)  251.08                80
 09/04/2019   10:16:23   (   0.37,-128.33) (   1.03,-131.34)  342.61                80
 09/05/2019   09:54:48   (   0.37,-128.32) (   0.03,-126.77)  176.69                80
 09/06/2019   22:16:28   (  -0.37,-128.27) (  -1.20,-132.01)  425.43                80
 09/07/2019   22:00:13   (  -0.36,-128.26) (  -0.20,-127.43)   94.01                80
 09/09/2019   10:21:45   (   0.35,-128.26) (   1.34,-132.64)  499.96                80
 09/10/2019   10:00:10   (   0.36,-128.24) (   0.34,-128.07)   19.01                80