Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 12 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/04/2013   22:13:24   (   0.03,-135.37) (   0.88,-131.46)  445.48                80
 12/06/2013   10:32:35   (  -0.06,-135.39) (   0.27,-136.74)  154.04                80
 12/07/2013   10:16:32   (  -0.04,-135.38) (  -0.77,-132.22)  360.65                80
 12/08/2013   22:35:51   (   0.07,-135.31) (  -0.45,-137.52)  252.00                80
 12/09/2013   22:19:48   (   0.06,-135.29) (   0.59,-132.99)  262.47                80
 12/11/2013   10:38:59   (  -0.08,-135.31) (   0.61,-138.26)  337.69                80
 12/12/2013   10:22:56   (  -0.07,-135.29) (  -0.43,-133.74)  176.67                80
 12/13/2013   22:42:14   (   0.09,-135.22) (  -0.78,-139.04)  436.32                80
 12/14/2013   22:26:11   (   0.07,-135.19) (   0.21,-134.51)   77.60                80
 12/17/2013   10:26:39   (  -0.08,-135.17) (  -0.07,-135.26)    9.99                80