Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 3 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/04/2013   10:23:16   (  -0.02,-135.41) (  -0.06,-135.29)   14.95                80
 03/06/2013   22:29:09   (   0.01,-135.36) (  -0.16,-136.05)   79.46                80
 03/07/2013   22:07:46   (   0.01,-135.36) (   0.85,-131.53)  436.66                80
 03/09/2013   10:29:36   (  -0.00,-135.42) (   0.29,-136.81)  158.14                80
 03/10/2013   10:10:53   (  -0.01,-135.42) (  -0.73,-132.28)  357.87                80
 03/11/2013   22:35:30   (   0.00,-135.36) (  -0.50,-137.58)  253.25                80
 03/12/2013   22:14:07   (   0.01,-135.36) (   0.51,-133.05)  262.47                80
 03/14/2013   10:35:57   (  -0.01,-135.41) (   0.62,-138.34)  333.17                80
 03/15/2013   10:19:52   (  -0.01,-135.40) (  -0.34,-133.80)  182.38                80