Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 2 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/22/2013   10:10:33   (  -0.03,-135.28) (  -0.73,-132.23)  347.87                80
 02/23/2013   22:35:11   (   0.02,-135.26) (  -0.51,-137.53)  259.70                80
 02/24/2013   22:13:47   (   0.02,-135.27) (   0.51,-133.00)  258.17                80
 02/26/2013   10:38:18   (  -0.02,-135.35) (   0.62,-138.29)  334.50                80
 02/27/2013   10:16:54   (  -0.02,-135.36) (  -0.39,-133.76)  182.87                80
 02/28/2013   22:41:32   (   0.02,-135.33) (  -0.79,-139.07)  426.06                80
 03/01/2013   22:20:09   (   0.02,-135.34) (   0.22,-134.54)   90.83                80
 03/04/2013   10:23:15   (  -0.02,-135.40) (  -0.03,-135.29)   12.96                80
 03/06/2013   22:29:10   (   0.01,-135.35) (  -0.14,-136.07)   81.52                80
 03/07/2013   22:07:46   (   0.01,-135.35) (   0.87,-131.54)  434.40                80