Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 3 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/08/2012   22:33:16   (  -0.05,-135.39) (  -0.52,-137.55)  245.51                80
 03/09/2012   22:17:11   (  -0.05,-135.38) (   0.49,-133.02)  269.46                80
 03/11/2012   10:36:20   (   0.05,-135.35) (   0.67,-138.30)  334.85                80
 03/12/2012   10:20:14   (   0.05,-135.34) (  -0.29,-133.76)  179.63                80
 03/13/2012   22:39:30   (  -0.05,-135.32) (  -0.88,-139.07)  427.34                80
 03/14/2012   22:23:26   (  -0.05,-135.30) (   0.14,-134.54)   86.81                80
 03/17/2012   10:23:49   (   0.06,-135.23) (   0.06,-135.28)    4.78                80
 03/19/2012   22:27:00   (  -0.06,-135.19) (  -0.25,-136.05)   98.40                80
 03/20/2012   22:10:55   (  -0.06,-135.16) (   0.78,-131.52)  415.41                80