Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 8 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/03/2013   22:17:51   (   0.28,-135.32) (   0.77,-133.00)  263.03                80
 08/05/2013   10:37:02   (  -0.29,-135.29) (   0.39,-138.28)  340.83                80
 08/06/2013   10:20:58   (  -0.29,-135.28) (  -0.61,-133.75)  173.49                80
 08/07/2013   22:40:16   (   0.30,-135.25) (  -0.57,-139.06)  434.81                80
 08/08/2013   22:24:13   (   0.30,-135.23) (   0.43,-134.53)   79.38                80
 08/11/2013   10:24:40   (  -0.30,-135.18) (  -0.28,-135.28)   11.44                80
 08/13/2013   22:27:55   (   0.31,-135.10) (   0.11,-136.06)  108.10                80
 08/14/2013   22:11:51   (   0.31,-135.07) (   1.12,-131.53)  404.76                80
 08/16/2013   10:31:01   (  -0.32,-135.03) (   0.10,-136.79)  201.42                80
 08/17/2013   10:14:57   (  -0.32,-134.99) (  -0.91,-132.26)  310.85                80