Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 4 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)
 04/30/2019   10:19:42   (   0.06,-128.05) (   0.96,-132.02)  452.59                80
 05/01/2019   09:58:07   (   0.07,-128.08) (  -0.08,-127.46)   71.22                80
 05/03/2019   22:03:34   (  -0.06,-128.15) (  -0.04,-128.14)    2.97                80
 05/06/2019   10:06:12   (   0.05,-128.20) (   0.17,-128.78)   65.84                80
 05/07/2019   09:44:37   (   0.06,-128.22) (  -0.87,-124.21)  456.98                80
 05/08/2019   22:06:18   (  -0.05,-128.25) (  -0.35,-129.45)  138.02                80
 05/09/2019   21:50:03   (  -0.06,-128.26) (   0.69,-124.88)  384.60                80
 05/11/2019   10:08:55   (   0.05,-128.28) (   0.47,-130.09)  207.59                80
 05/12/2019   09:52:41   (   0.06,-128.29) (  -0.57,-125.53)  314.58                80