Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 5 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/06/2019   10:06:12   (   0.06,-128.21) (   0.18,-128.78)   64.75                80
 05/07/2019   09:47:17   (   0.06,-128.23) (  -0.85,-124.21)  458.24                80
 05/08/2019   22:06:18   (  -0.05,-128.26) (  -0.31,-129.46)  136.53                80
 05/09/2019   21:50:04   (  -0.06,-128.27) (   0.73,-124.89)  386.24                80
 05/11/2019   10:08:56   (   0.05,-128.29) (   0.43,-130.10)  205.62                80
 05/12/2019   09:52:41   (   0.06,-128.30) (  -0.55,-125.52)  316.77                80
 05/13/2019   22:11:42   (  -0.05,-128.32) (  -0.61,-130.77)  279.19                80
 05/14/2019   21:55:28   (  -0.05,-128.34) (   0.42,-126.20)  243.21                80
 05/16/2019   10:14:20   (   0.04,-128.35) (   0.73,-131.41)  348.83                80
 05/17/2019   09:58:05   (   0.05,-128.36) (  -0.30,-126.85)  173.14                80
 05/18/2019   22:17:07   (  -0.03,-128.37) (  -0.86,-132.09)  423.93                80