Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 6 28.  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)
 06/30/2017   00:30:25   (   0.18,-135.46) (  -0.46,-138.12)  303.54                80
 07/01/2017   00:21:39   (   0.18,-135.46) (   0.24,-135.34)   15.20                80
 07/02/2017   00:10:12   (   0.18,-135.46) (   0.88,-132.55)  333.18                80
 07/04/2017   12:29:05   (  -0.20,-135.43) (   0.31,-137.68)  255.90                80
 07/05/2017   12:20:18   (  -0.20,-135.43) (  -0.35,-134.89)   61.88                80
 07/06/2017   12:08:49   (  -0.20,-135.42) (  -0.94,-132.09)  379.39                80
 07/09/2017   00:27:45   (   0.22,-135.40) (  -0.21,-137.23)  209.57                80
 07/10/2017   00:18:58   (   0.22,-135.39) (   0.43,-134.44)  107.46                80
 07/11/2017   00:07:30   (   0.22,-135.37) (   1.07,-131.65)  424.40                80
 07/12/2017   12:37:50   (  -0.24,-135.34) (   0.76,-139.56)  482.92                80