Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 9 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/04/2019   10:16:23   (   0.37,-128.34) (   1.06,-131.33)  342.20                80
 09/05/2019   09:54:48   (   0.37,-128.32) (   0.01,-126.77)  177.08                80
 09/06/2019   22:16:29   (  -0.37,-128.27) (  -1.18,-132.01)  425.59                80
 09/07/2019   22:00:13   (  -0.36,-128.26) (  -0.18,-127.43)   93.79                80
 09/09/2019   10:21:46   (   0.35,-128.26) (   1.32,-132.65)  499.70                80
 09/10/2019   10:00:10   (   0.35,-128.24) (   0.32,-128.07)   19.12                80
 09/12/2019   22:02:55   (  -0.35,-128.16) (  -0.50,-128.73)   65.83                80
 09/13/2019   21:46:40   (  -0.35,-128.14) (   0.56,-124.17)  453.35                80
 09/15/2019   10:08:12   (   0.34,-128.14) (   0.63,-129.37)  140.38                80
 09/16/2019   09:46:36   (   0.34,-128.11) (  -0.37,-124.79)  378.22                80