Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 7 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/04/2012   22:22:14   (   0.24,-135.29) (   0.42,-134.45)   95.22                80
 07/07/2012   10:22:38   (  -0.25,-135.33) (  -0.25,-135.20)   15.25                80
 07/09/2012   22:25:51   (   0.26,-135.36) (   0.15,-135.99)   70.56                80
 07/10/2012   22:09:46   (   0.25,-135.38) (   1.11,-131.45)  447.39                80
 07/12/2012   10:28:55   (  -0.28,-135.40) (  -0.01,-136.73)  151.64                80
 07/13/2012   10:12:50   (  -0.27,-135.41) (  -0.97,-132.19)  365.69                80
 07/14/2012   22:32:06   (   0.29,-135.41) (  -0.19,-137.50)  239.32                80
 07/15/2012   22:16:01   (   0.29,-135.41) (   0.84,-132.98)  277.77                80
 07/17/2012   10:35:10   (  -0.31,-135.43) (   0.31,-138.26)  322.02                80
 07/18/2012   10:19:04   (  -0.30,-135.43) (  -0.67,-133.72)  194.56                80