Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 12 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/01/2013   22:25:36   (   0.09,-135.38) (  -0.03,-135.94)   64.42                80
 01/02/2013   22:09:30   (   0.08,-135.36) (   0.96,-131.40)  451.00                80
 01/04/2013   10:28:38   (  -0.10,-135.37) (   0.22,-136.67)  149.09                80
 01/05/2013   10:12:33   (  -0.09,-135.35) (  -0.83,-132.15)  365.63                80
 01/06/2013   22:31:49   (   0.10,-135.28) (  -0.37,-137.44)  245.45                80
 01/07/2013   22:15:43   (   0.09,-135.26) (   0.62,-132.90)  269.00                80
 01/09/2013   10:34:50   (  -0.09,-135.26) (   0.55,-138.17)  331.93                80
 01/10/2013   10:18:45   (  -0.08,-135.23) (  -0.44,-133.63)  181.80                80
 01/11/2013   22:38:00   (   0.09,-135.15) (  -0.75,-138.93)  431.06                80
 01/12/2013   22:21:55   (   0.09,-135.12) (   0.25,-134.39)   82.71                80