Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 4 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)
 04/28/2019   21:58:09   (  -0.07,-128.02) (   0.19,-126.81)  137.35                80
 04/30/2019   10:19:42   (   0.06,-128.05) (   0.92,-132.03)  452.64                80
 05/01/2019   09:58:07   (   0.07,-128.08) (  -0.05,-127.45)   71.18                80
 05/03/2019   22:03:34   (  -0.06,-128.15) (  -0.06,-128.13)    1.75                80
 05/06/2019   10:06:11   (   0.05,-128.20) (   0.19,-128.78)   65.94                80
 05/07/2019   09:44:37   (   0.06,-128.22) (  -0.85,-124.21)  456.84                80
 05/08/2019   22:06:18   (  -0.05,-128.24) (  -0.30,-129.46)  138.21                80
 05/09/2019   21:50:03   (  -0.06,-128.26) (   0.68,-124.88)  384.39                80
 05/11/2019   10:08:55   (   0.05,-128.27) (   0.48,-130.09)  207.77                80