Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2015 3 18.  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)
 03/18/2015   22:57:27   (   0.00,-135.05) (   0.58,-132.64)  276.25                80
 03/21/2015   11:19:37   (   0.00,-134.99) (   0.68,-137.94)  336.42                80
 03/22/2015   11:08:27   (   0.00,-134.96) (   0.05,-135.24)   31.42                80
 03/23/2015   10:54:37   (  -0.00,-134.92) (  -0.53,-132.52)  273.51                80
 03/25/2015   23:17:05   (  -0.00,-134.79) (  -0.69,-137.90)  354.20                80
 03/26/2015   23:05:54   (  -0.00,-134.75) (  -0.09,-135.19)   49.34                80
 03/27/2015   22:57:24   (  -0.00,-134.71) (   0.51,-132.47)  255.44                80
 03/30/2015   11:19:35   (   0.01,-134.64) (   0.74,-137.78)  359.26                80
 03/31/2015   11:08:25   (   0.01,-134.59) (   0.09,-135.08)   55.06                80