Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 9 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 09/12/2017   12:29:38   (   0.25,-135.22) (   0.39,-135.76)   61.37                80
 09/13/2017   12:20:49   (   0.25,-135.25) (  -0.26,-132.96)  260.29                80
 09/16/2017   00:39:47   (  -0.22,-135.22) (  -0.91,-138.11)  331.14                80
 09/17/2017   00:28:18   (  -0.22,-135.24) (  -0.24,-135.32)    9.48                80
 09/18/2017   00:19:30   (  -0.23,-135.26) (   0.43,-132.53)  312.07                80
 09/20/2017   12:38:17   (   0.19,-135.40) (   0.70,-137.64)  255.34                80
 09/21/2017   12:29:28   (   0.20,-135.42) (   0.05,-134.84)   65.81                80
 09/22/2017   12:17:59   (   0.21,-135.43) (  -0.55,-132.04)  386.82                80
 09/25/2017   00:36:54   (  -0.18,-135.37) (  -0.62,-137.17)  206.15                80