Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 4 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)
 04/10/2014   22:32:36   (  -0.02,-135.39) (  -0.20,-136.08)   78.55                80
 04/11/2014   22:16:34   (  -0.02,-135.40) (   0.87,-131.56)  438.44                80
 04/13/2014   10:38:24   (   0.02,-135.42) (   0.36,-136.82)  160.38                80
 04/14/2014   10:17:03   (   0.01,-135.43) (  -0.71,-132.31)  356.00                80
 04/15/2014   22:39:02   (  -0.01,-135.42) (  -0.48,-137.61)  249.38                80
 04/16/2014   22:23:00   (  -0.01,-135.42) (   0.53,-133.09)  266.62                80
 04/18/2014   10:44:50   (   0.01,-135.43) (   0.69,-138.35)  333.52                80
 04/19/2014   10:23:28   (   0.01,-135.42) (  -0.33,-133.82)  181.81                80
 04/20/2014   22:45:27   (  -0.01,-135.40) (  -0.86,-139.13)  425.37                80
 04/21/2014   22:29:24   (  -0.01,-135.39) (   0.16,-134.60)   89.74                80