Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 12 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/23/2014   22:19:28   (   0.07,-135.34) (   0.92,-131.54)  433.21                80
 12/25/2014   10:38:33   (  -0.09,-135.35) (   0.27,-136.80)  166.02                80
 12/26/2014   10:22:26   (  -0.08,-135.34) (  -0.73,-132.27)  349.18                80
 12/27/2014   22:41:41   (   0.10,-135.28) (  -0.42,-137.58)  262.17                80
 12/28/2014   22:25:34   (   0.09,-135.26) (   0.59,-133.04)  253.02                80
 12/30/2014   10:44:39   (  -0.10,-135.27) (   0.58,-138.31)  346.27                80
 12/31/2014   10:28:33   (  -0.09,-135.25) (  -0.43,-133.78)  168.43                80
 01/01/2015   22:47:46   (   0.10,-135.18) (  -0.77,-139.07)  444.13                80
 01/02/2015   22:31:40   (   0.09,-135.15) (   0.24,-134.54)   70.53                80
 01/05/2015   10:31:58   (  -0.09,-135.14) (  -0.05,-135.26)   14.91                80