Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 8 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/01/2013   10:33:49   (   0.42,-135.40) (   0.73,-136.68)  146.41                80
 09/02/2013   10:12:25   (   0.42,-135.41) (  -0.29,-132.15)  371.67                80
 09/03/2013   22:34:23   (  -0.41,-135.38) (  -0.88,-137.46)  237.41                80
 09/04/2013   22:18:20   (  -0.41,-135.39) (   0.14,-132.93)  280.90                80
 09/06/2013   10:40:10   (   0.40,-135.49) (   0.98,-138.21)  310.15                80
 09/07/2013   10:18:46   (   0.41,-135.50) (   0.02,-133.67)  207.40                80
 09/08/2013   22:40:44   (  -0.39,-135.44) (  -1.19,-138.98)  403.83                80
 09/09/2013   22:24:41   (  -0.40,-135.45) (  -0.17,-134.45)  113.56                80
 09/11/2013   10:43:50   (   0.38,-135.53) (   1.34,-139.73)  478.39                80
 09/12/2013   10:27:46   (   0.38,-135.53) (   0.31,-135.20)   38.04                80