Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 6 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/29/2012   22:15:59   (   0.20,-135.19) (   0.69,-132.92)  258.13                80
 07/01/2012   10:35:10   (  -0.23,-135.23) (   0.46,-138.21)  340.91                80
 07/02/2012   10:19:09   (  -0.22,-135.24) (  -0.59,-133.70)  176.13                80
 07/03/2012   22:38:30   (   0.25,-135.26) (  -0.60,-139.03)  429.82                80
 07/04/2012   22:22:30   (   0.24,-135.27) (   0.42,-134.52)   86.55                80
 07/07/2012   10:25:46   (  -0.25,-135.32) (  -0.28,-135.32)    3.18                80
 07/09/2012   22:26:34   (   0.26,-135.34) (   0.09,-136.16)   93.17                80
 07/10/2012   22:10:37   (   0.25,-135.36) (   1.07,-131.66)  421.08                80
 07/12/2012   10:29:58   (  -0.28,-135.38) (   0.09,-136.99)  183.69                80