Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2011 12 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/13/2011   10:05:59   (  -0.01,-133.95) (  -0.76,-130.69)  372.65                80
 12/14/2011   22:30:37   (   0.03,-135.22) (  -0.17,-136.04)   94.50                80
 12/15/2011   22:09:14   (   0.01,-135.93) (   0.99,-131.54)  499.34                80
 12/17/2011   10:33:43   (  -0.03,-136.83) (  -0.03,-136.86)    3.12                80
 12/18/2011   22:53:01   (   0.04,-138.06) (  -0.90,-142.21)  473.44                80
 12/19/2011   22:34:18   (   0.03,-138.76) (   0.26,-137.71)  119.82                80
 12/21/2011   10:58:47   (  -0.04,-139.68) (   0.69,-143.03)  381.43                80
 12/22/2011   10:37:23   (  -0.03,-140.36) (  -0.41,-138.51)  209.72                80
 12/23/2011   22:59:22   (   0.03,-141.57) (  -0.46,-143.88)  262.90                80
 12/24/2011   22:40:37   (   0.02,-142.27) (   0.64,-139.37)  329.56                80
 12/26/2011   11:05:07   (  -0.03,-143.18) (   0.30,-144.69)  171.70                80