Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 11 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)
 11/10/2013   10:22:11   (   0.07,-135.28) (  -0.31,-133.68)  182.85                80
 11/11/2013   22:41:28   (  -0.03,-135.26) (  -0.88,-138.97)  423.44                80
 11/12/2013   22:25:23   (  -0.05,-135.28) (   0.14,-134.44)   96.21                80
 11/14/2013   10:44:32   (   0.02,-135.37) (   1.01,-139.71)  495.07                80
 11/15/2013   10:28:27   (   0.04,-135.39) (  -0.01,-135.18)   24.40                80
 11/17/2013   22:28:59   (  -0.03,-135.38) (  -0.14,-135.94)   63.31                80
 11/18/2013   22:12:54   (  -0.04,-135.40) (   0.88,-131.41)  455.59                80
 11/20/2013   10:32:03   (   0.01,-135.47) (   0.27,-136.68)  137.03                80
 11/21/2013   10:15:57   (   0.03,-135.49) (  -0.70,-132.13)  381.62                80
 11/22/2013   22:35:14   (   0.00,-135.45) (  -0.47,-137.43)  226.29                80