Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 6 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/01/2012   10:35:10   (  -0.23,-135.23) (   0.41,-138.22)  340.24                80
 07/02/2012   10:19:06   (  -0.22,-135.24) (  -0.55,-133.69)  177.07                80
 07/03/2012   22:38:28   (   0.25,-135.26) (  -0.58,-139.02)  428.41                80
 07/04/2012   22:22:26   (   0.24,-135.28) (   0.43,-134.51)   88.34                80
 07/07/2012   10:25:40   (  -0.25,-135.32) (  -0.26,-135.29)    3.57                80
 07/09/2012   22:26:25   (   0.26,-135.35) (   0.06,-136.12)   88.87                80
 07/10/2012   22:10:26   (   0.25,-135.36) (   1.07,-131.62)  426.05                80
 07/12/2012   10:29:46   (  -0.28,-135.38) (   0.07,-136.94)  177.62                80
 07/13/2012   10:13:48   (  -0.27,-135.39) (  -0.92,-132.44)  336.10                80