Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 8 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/06/2013   10:20:58   (  -0.29,-135.28) (  -0.62,-133.75)  173.36                80
 08/07/2013   22:40:17   (   0.30,-135.25) (  -0.56,-139.06)  434.84                80
 08/08/2013   22:24:13   (   0.30,-135.23) (   0.44,-134.53)   79.29                80
 08/11/2013   10:24:40   (  -0.30,-135.17) (  -0.28,-135.28)   11.70                80
 08/13/2013   22:27:55   (   0.31,-135.10) (   0.10,-136.05)  108.35                80
 08/14/2013   22:11:51   (   0.31,-135.07) (   1.11,-131.53)  404.46                80
 08/16/2013   10:31:02   (  -0.32,-135.03) (   0.05,-136.80)  201.90                80
 08/17/2013   10:14:58   (  -0.32,-134.99) (  -0.96,-132.27)  310.34                80
 08/18/2013   22:34:16   (   0.33,-134.93) (  -0.28,-137.57)  301.21                80