Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 2 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/14/2012   10:26:25   (  -0.01,-135.21) (  -0.02,-135.20)    2.35                80
 02/16/2012   22:29:38   (   0.02,-135.25) (  -0.15,-135.98)   83.64                80
 02/17/2012   22:08:13   (   0.02,-135.26) (   0.85,-131.45)  434.09                80
 02/19/2012   10:30:03   (  -0.02,-135.30) (   0.28,-136.74)  163.09                80
 02/20/2012   10:13:58   (  -0.02,-135.32) (  -0.72,-132.21)  354.68                80
 02/21/2012   22:35:56   (   0.03,-135.33) (  -0.44,-137.52)  249.41                80
 02/22/2012   22:14:31   (   0.02,-135.34) (   0.56,-132.99)  268.19                80
 02/24/2012   10:36:19   (  -0.03,-135.38) (   0.63,-138.27)  329.56                80
 02/25/2012   10:20:15   (  -0.03,-135.39) (  -0.37,-133.74)  187.79                80
 02/26/2012   22:42:12   (   0.03,-135.39) (  -0.79,-139.05)  417.08                80