Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 6 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/09/2013   10:08:05   (  -0.04,-134.92) (  -1.00,-130.75)  475.84                80
 06/10/2013   22:27:21   (   0.06,-134.86) (  -0.20,-136.05)  134.89                80
 06/11/2013   22:11:16   (   0.05,-134.83) (   0.77,-131.50)  378.13                80
 06/13/2013   10:30:23   (  -0.07,-134.77) (   0.40,-136.77)  228.01                80
 06/14/2013   10:14:18   (  -0.06,-134.73) (  -0.63,-132.24)  284.47                80
 06/15/2013   22:33:35   (   0.08,-134.66) (  -0.57,-137.53)  327.79                80
 06/16/2013   22:17:30   (   0.07,-134.62) (   0.47,-133.00)  184.58                80
 06/18/2013   10:36:38   (  -0.09,-134.56) (   0.71,-138.27)  422.24                80
 06/19/2013   10:20:32   (  -0.09,-134.51) (  -0.26,-133.72)   89.26                80
 06/21/2013   22:21:03   (   0.10,-134.36) (   0.05,-134.48)   14.13                80
 06/22/2013   22:04:58   (   0.09,-134.31) (   1.09,-129.95)  497.10                80