Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 8 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/18/2012   10:37:36   (   0.43,-134.71) (   1.18,-138.10)  386.05                80
 08/19/2012   10:16:11   (   0.43,-134.67) (   0.20,-133.56)  125.81                80
 08/20/2012   22:38:07   (  -0.43,-134.60) (  -1.36,-138.87)  485.48                80
 08/21/2012   22:22:02   (  -0.43,-134.56) (  -0.39,-134.33)   26.54                80
 08/24/2012   10:25:03   (   0.42,-134.45) (   0.58,-135.06)   70.27                80
 08/25/2012   10:03:39   (   0.42,-134.40) (  -0.46,-130.53)  440.48                80
 08/26/2012   22:25:34   (  -0.41,-134.31) (  -0.75,-135.83)  173.23                80
 08/27/2012   22:09:29   (  -0.41,-134.26) (   0.23,-131.29)  337.86                80
 08/29/2012   10:31:16   (   0.40,-134.19) (   0.94,-136.57)  270.42                80
 08/30/2012   10:09:51   (   0.40,-134.14) (  -0.05,-132.03)  240.12                80