Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 3 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/06/2013   22:29:09   (   0.01,-135.36) (  -0.16,-136.05)   79.34                80
 03/07/2013   22:07:46   (   0.01,-135.36) (   0.85,-131.53)  436.79                80
 03/09/2013   10:31:07   (  -0.00,-135.42) (   0.29,-136.81)  158.09                11
 03/10/2013   10:10:53   (  -0.01,-135.42) (  -0.72,-132.28)  357.91                80
 03/11/2013   22:35:30   (   0.00,-135.36) (  -0.51,-137.58)  253.14                80
 03/12/2013   22:14:07   (   0.01,-135.36) (   0.51,-133.05)  262.58                80
 03/14/2013   10:35:57   (  -0.01,-135.41) (   0.63,-138.34)  333.13                80
 03/15/2013   10:19:53   (  -0.01,-135.40) (  -0.38,-133.81)  182.37                80
 03/16/2013   22:41:51   (   0.00,-135.34) (  -0.84,-139.11)  429.42                80
 03/17/2013   22:20:27   (   0.00,-135.33) (   0.18,-134.58)   85.59                80