Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2011 12 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/08/2011   09:59:37   (  -0.01,-130.35) (  -0.28,-129.01)  152.70                80
 12/09/2011   22:24:17   (   0.02,-131.64) (  -0.59,-134.38)  312.61                80
 12/10/2011   22:02:53   (   0.01,-132.35) (   0.56,-129.88)  281.89                80
 12/12/2011   10:27:23   (  -0.02,-133.26) (   0.41,-135.19)  220.42                80
 12/13/2011   10:05:59   (  -0.01,-133.95) (  -0.75,-130.69)  372.32                80
 12/14/2011   22:30:37   (   0.03,-135.22) (  -0.18,-136.04)   94.90                80
 12/15/2011   22:09:14   (   0.01,-135.93) (   0.98,-131.54)  498.94                80
 12/17/2011   10:33:43   (  -0.03,-136.83) (  -0.02,-136.86)    3.65                80
 12/18/2011   22:53:01   (   0.04,-138.06) (  -0.91,-142.21)  473.90                80
 12/19/2011   22:34:18   (   0.03,-138.77) (   0.25,-137.71)  119.37                80
 12/21/2011   10:58:47   (  -0.04,-139.68) (   0.70,-143.03)  381.93                80