Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2011 12 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/09/2011   22:24:17   (   0.02,-131.63) (  -0.57,-134.38)  312.56                80
 12/10/2011   22:02:53   (   0.01,-132.35) (   0.59,-129.88)  282.03                80
 12/12/2011   10:27:22   (  -0.02,-133.25) (   0.42,-135.18)  220.17                80
 12/13/2011   10:05:58   (  -0.01,-133.95) (  -0.75,-130.68)  372.66                80
 12/14/2011   22:30:37   (   0.03,-135.22) (  -0.16,-136.04)   94.39                80
 12/15/2011   22:09:13   (   0.01,-135.92) (   1.01,-131.55)  499.54                80
 12/17/2011   10:33:41   (  -0.03,-136.83) (  -0.03,-136.85)    2.69                80
 12/18/2011   22:53:00   (   0.04,-138.06) (  -0.87,-142.21)  472.83                80
 12/19/2011   22:34:15   (   0.03,-138.76) (   0.26,-137.70)  120.61                80
 12/21/2011   10:58:43   (  -0.04,-139.67) (   0.71,-143.01)  380.35                80
 12/22/2011   10:37:19   (  -0.03,-140.36) (  -0.42,-138.50)  210.99                80