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   10:11:01   (   0.37,-128.39) (   0.74,-130.04)  188.27                80
 08/31/2019   09:49:26   (   0.37,-128.37) (  -0.26,-125.46)  331.48                80
 09/01/2019   22:11:06   (  -0.37,-128.34) (  -0.91,-130.70)  268.91                80
 09/02/2019   21:54:52   (  -0.37,-128.34) (   0.14,-126.14)  251.17                80
 09/04/2019   10:16:23   (   0.37,-128.34) (   1.06,-131.34)  342.40                80
 09/05/2019   09:54:49   (   0.37,-128.32) (  -0.00,-126.77)  176.95                80
 09/06/2019   22:16:28   (  -0.37,-128.28) (  -1.23,-132.00)  425.26                80
 09/07/2019   22:00:13   (  -0.36,-128.26) (  -0.18,-127.44)   94.18                80
 09/09/2019   10:21:46   (   0.35,-128.26) (   1.31,-132.65)  499.64                80
 09/10/2019   10:00:10   (   0.36,-128.24) (   0.31,-128.07)   19.25                80