Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 7 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/31/2013   10:30:40   (  -0.27,-135.37) (   0.06,-136.75)  158.11                80
 08/01/2013   10:14:36   (  -0.27,-135.36) (  -0.94,-132.22)  357.13                80
 08/02/2013   22:33:55   (   0.28,-135.34) (  -0.24,-137.53)  251.06                80
 08/03/2013   22:17:52   (   0.28,-135.33) (   0.82,-133.01)  264.00                80
 08/05/2013   10:37:02   (  -0.29,-135.32) (   0.35,-138.29)  337.89                80
 08/06/2013   10:20:59   (  -0.29,-135.31) (  -0.65,-133.76)  176.78                80
 08/07/2013   22:40:17   (   0.30,-135.27) (  -0.52,-139.07)  432.40                80
 08/08/2013   22:24:14   (   0.30,-135.26) (   0.48,-134.54)   82.11                80
 08/11/2013   10:27:21   (  -0.31,-135.22) (  -0.32,-135.29)    7.09                80