Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 8 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/28/2019   21:49:30   (  -0.37,-128.39) (   0.43,-124.83)  405.45                80
 08/30/2019   10:11:01   (   0.38,-128.38) (   0.77,-130.03)  188.50                80
 08/31/2019   09:49:26   (   0.37,-128.37) (  -0.29,-125.47)  331.19                80
 09/01/2019   22:11:07   (  -0.37,-128.34) (  -0.88,-130.71)  269.16                80
 09/02/2019   21:54:51   (  -0.37,-128.33) (   0.12,-126.13)  250.86                80
 09/04/2019   10:16:24   (   0.37,-128.33) (   1.02,-131.35)  342.92                80
 09/05/2019   09:54:48   (   0.37,-128.31) (   0.02,-126.77)  176.36                80
 09/06/2019   22:16:28   (  -0.37,-128.27) (  -1.19,-132.01)  425.78                80
 09/07/2019   22:00:13   (  -0.36,-128.25) (  -0.19,-127.43)   93.60                80
 09/10/2019   10:00:10   (   0.36,-128.23) (   0.32,-128.07)   18.40                80