Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2011 12 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/05/2011   21:56:34   (   0.01,-129.11) (   0.23,-128.23)  100.68                80
 12/07/2011   10:21:03   (  -0.03,-130.11) (   0.74,-133.54)  391.23                80
 12/08/2011   09:59:39   (  -0.01,-130.89) (  -0.42,-129.04)  210.36                80
 12/09/2011   22:24:19   (   0.02,-132.30) (  -0.44,-134.41)  240.32                80
 12/10/2011   22:02:55   (   0.01,-133.09) (   0.73,-129.91)  362.22                80
 12/12/2011   10:27:24   (  -0.02,-134.08) (   0.21,-135.23)  130.11                80
 12/13/2011   10:06:01   (  -0.01,-134.85) (  -0.96,-130.73)  470.65                80
 12/14/2011   22:27:59   (   0.02,-136.25) (   0.07,-136.09)   18.23                80
 12/16/2011   10:52:28   (  -0.04,-137.26) (   0.92,-141.40)  472.70                80
 12/17/2011   10:31:04   (  -0.03,-138.02) (  -0.27,-136.90)  127.43                80