Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 5 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)
 05/17/2012   22:22:57   (   0.01,-135.45) (   0.24,-134.54)  103.94                80
 05/19/2012   10:42:03   (  -0.04,-135.45) (   0.92,-139.81)  496.32                80
 05/20/2012   10:25:57   (  -0.03,-135.45) (  -0.05,-135.27)   21.13                80
 05/22/2012   22:26:27   (   0.04,-135.47) (  -0.09,-136.04)   65.53                80
 05/23/2012   22:10:21   (   0.03,-135.47) (   0.93,-131.51)  451.49                80
 05/25/2012   10:29:27   (  -0.05,-135.46) (   0.27,-136.77)  149.94                80
 05/26/2012   10:13:21   (  -0.04,-135.45) (  -0.76,-132.24)  366.66                80
 05/27/2012   22:32:36   (   0.06,-135.45) (  -0.39,-137.54)  238.37                80
 05/28/2012   22:16:30   (   0.05,-135.44) (   0.59,-133.00)  278.07                80
 05/30/2012   10:35:36   (  -0.07,-135.43) (   0.55,-138.27)  324.08                80