Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2015 7 20.  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)
 07/20/2015   23:15:28   (   0.21,-135.13) (   0.25,-135.06)    8.89                80
 07/21/2015   23:04:14   (   0.21,-135.13) (   0.82,-132.32)  319.88                80
 07/24/2015   11:23:36   (  -0.23,-135.12) (   0.31,-137.61)  282.97                80
 07/25/2015   11:15:02   (  -0.23,-135.12) (  -0.31,-134.88)   27.96                80
 07/26/2015   11:03:48   (  -0.23,-135.12) (  -0.88,-132.15)  338.36                80
 07/28/2015   23:23:27   (   0.25,-135.11) (  -0.27,-137.51)  272.18                80
 07/29/2015   23:14:53   (   0.25,-135.10) (   0.31,-134.77)   37.75                80
 07/30/2015   23:03:40   (   0.25,-135.09) (   0.95,-132.05)  347.44                80
 08/02/2015   11:23:01   (  -0.26,-135.04) (   0.26,-137.32)  260.36                80