Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 5 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/22/2012   22:26:27   (   0.04,-135.46) (  -0.11,-136.04)   66.48                80
 05/23/2012   22:10:22   (   0.03,-135.46) (   0.90,-131.50)  450.40                80
 05/25/2012   10:29:28   (  -0.05,-135.44) (   0.26,-136.77)  151.83                80
 05/26/2012   10:13:22   (  -0.04,-135.44) (  -0.75,-132.24)  364.55                80
 05/27/2012   22:32:38   (   0.06,-135.44) (  -0.43,-137.54)  240.26                80
 05/28/2012   22:16:32   (   0.05,-135.43) (   0.59,-133.01)  275.94                80
 05/30/2012   10:35:39   (  -0.07,-135.41) (   0.58,-138.27)  327.12                80
 05/31/2012   10:19:33   (  -0.06,-135.39) (  -0.44,-133.74)  188.38                80
 06/01/2012   22:38:48   (   0.09,-135.38) (  -0.74,-139.05)  418.32                80
 06/02/2012   22:22:43   (   0.08,-135.36) (   0.28,-134.51)   96.78                80