Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 2 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/14/2015   22:24:12   (   0.06,-135.32) (   0.60,-132.94)  271.36                80
 02/16/2015   10:45:59   (  -0.05,-135.35) (   0.60,-138.21)  326.45                80
 02/17/2015   10:24:33   (  -0.05,-135.35) (  -0.39,-133.67)  190.69                80
 02/18/2015   22:46:30   (   0.04,-135.36) (  -0.76,-138.99)  414.04                80
 02/19/2015   22:30:24   (   0.04,-135.36) (   0.24,-134.46)  103.14                80
 02/21/2015   10:52:10   (  -0.04,-135.39) (   0.95,-139.73)  495.02                80
 02/22/2015   10:30:46   (  -0.04,-135.39) (  -0.11,-135.21)   21.55                80
 02/24/2015   22:33:56   (   0.04,-135.38) (  -0.09,-135.98)   68.17                80
 02/25/2015   22:17:50   (   0.04,-135.38) (   0.91,-131.45)  448.32                80
 02/27/2015   10:39:37   (  -0.03,-135.40) (   0.29,-136.72)  150.64                80