Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 7 25.  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)
 07/26/2017   00:33:48   (   0.29,-134.93) (  -0.47,-138.21)  373.69                80
 07/27/2017   00:22:20   (   0.29,-134.90) (   0.19,-135.42)   58.83                80
 07/28/2017   00:13:32   (   0.29,-134.86) (   0.78,-132.62)  255.97                80
 07/30/2017   12:34:58   (  -0.30,-134.77) (   0.38,-137.72)  337.21                80
 07/31/2017   12:23:30   (  -0.30,-134.73) (  -0.24,-134.92)   22.97                80
 08/01/2017   12:09:23   (  -0.30,-134.68) (  -0.92,-132.14)  291.22                80
 08/04/2017   00:31:02   (   0.31,-134.57) (  -0.33,-137.28)  310.27                80
 08/05/2017   00:22:15   (   0.32,-134.52) (   0.34,-134.50)    3.70                80
 08/06/2017   00:10:46   (   0.32,-134.48) (   0.94,-131.70)  316.89                80