Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 6 27.  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   00:30:26   (   0.18,-135.46) (  -0.43,-138.12)  303.37                80
 07/01/2017   00:21:39   (   0.18,-135.46) (   0.21,-135.33)   15.07                80
 07/02/2017   00:10:11   (   0.18,-135.46) (   0.85,-132.54)  333.46                80
 07/04/2017   12:29:05   (  -0.20,-135.44) (   0.34,-137.67)  255.57                80
 07/05/2017   12:20:17   (  -0.20,-135.43) (  -0.32,-134.88)   62.24                80
 07/06/2017   12:08:50   (  -0.20,-135.42) (  -0.97,-132.10)  379.85                80
 07/09/2017   00:27:46   (   0.22,-135.41) (  -0.18,-137.24)  208.81                80
 07/10/2017   00:18:58   (   0.22,-135.39) (   0.46,-134.45)  108.31                80
 07/11/2017   00:07:31   (   0.22,-135.38) (   1.10,-131.66)  425.32                80