Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 7 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/23/2013   22:23:51   (   0.24,-135.38) (   0.45,-134.48)  102.10                80
 07/25/2013   10:43:01   (  -0.26,-135.40) (   0.73,-139.76)  497.26                80
 07/26/2013   10:26:57   (  -0.25,-135.40) (  -0.27,-135.23)   19.07                80
 07/28/2013   22:27:33   (   0.26,-135.38) (   0.13,-136.01)   72.29                80
 07/29/2013   22:11:30   (   0.25,-135.37) (   1.13,-131.48)  443.61                80
 07/31/2013   10:30:40   (  -0.27,-135.39) (   0.04,-136.76)  156.68                80
 08/01/2013   10:14:37   (  -0.27,-135.38) (  -0.96,-132.23)  358.68                80
 08/02/2013   22:33:55   (   0.28,-135.35) (  -0.22,-137.54)  249.95                80
 08/03/2013   22:17:51   (   0.28,-135.34) (   0.78,-133.01)  265.24                80
 08/05/2013   10:37:02   (  -0.30,-135.34) (   0.39,-138.28)  335.73                80
 08/06/2013   10:20:58   (  -0.29,-135.33) (  -0.62,-133.75)  179.09                80