Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 2 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/06/2013   10:10:14   (  -0.07,-134.77) (  -0.64,-132.16)  297.58                80
 02/07/2013   22:34:52   (   0.06,-134.79) (  -0.56,-137.47)  305.45                80
 02/08/2013   22:16:09   (   0.06,-134.83) (   0.51,-132.95)  214.94                80
 02/10/2013   10:37:59   (  -0.06,-134.93) (   0.68,-138.22)  374.79                80
 02/11/2013   10:16:35   (  -0.06,-134.97) (  -0.32,-133.69)  145.30                80
 02/12/2013   22:41:15   (   0.05,-134.99) (  -0.82,-139.01)  458.34                80
 02/13/2013   22:19:51   (   0.05,-135.02) (   0.18,-134.49)   61.60                80
 02/16/2013   10:25:38   (  -0.05,-135.16) (  -0.04,-135.24)    9.28                80
 02/18/2013   22:28:53   (   0.04,-135.19) (  -0.16,-136.02)   94.71                80
 02/19/2013   22:07:29   (   0.04,-135.22) (   0.85,-131.49)  424.40                80