Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 5 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)
 05/03/2019   22:03:34   (  -0.06,-128.15) (  -0.04,-128.14)    2.93                80
 05/06/2019   10:06:12   (   0.05,-128.20) (   0.17,-128.78)   65.25                80
 05/07/2019   09:47:17   (   0.06,-128.22) (  -0.87,-124.21)  457.65                80
 05/08/2019   22:06:18   (  -0.05,-128.25) (  -0.35,-129.45)  137.19                80
 05/09/2019   21:50:03   (  -0.06,-128.27) (   0.69,-124.88)  385.49                80
 05/11/2019   10:08:55   (   0.05,-128.28) (   0.47,-130.09)  206.63                80
 05/12/2019   09:52:41   (   0.06,-128.29) (  -0.57,-125.53)  315.64                80
 05/13/2019   22:11:42   (  -0.05,-128.31) (  -0.58,-130.78)  280.35                80
 05/14/2019   21:55:27   (  -0.05,-128.32) (   0.40,-126.20)  241.97                80
 05/16/2019   10:14:19   (   0.04,-128.34) (   0.75,-131.41)  350.35                80