Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 12 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/14/2014   10:45:04   (  -0.08,-135.43) (   0.57,-138.33)  329.79                80
 12/15/2014   10:28:58   (  -0.07,-135.44) (  -0.41,-133.79)  187.60                80
 12/16/2014   22:48:13   (   0.08,-135.41) (  -0.71,-139.11)  421.11                80
 12/17/2014   22:32:07   (   0.07,-135.41) (   0.27,-134.57)   96.09                80
 12/20/2014   10:35:06   (  -0.08,-135.45) (  -0.10,-135.31)   16.30                80
 12/22/2014   22:35:34   (   0.08,-135.39) (  -0.09,-136.07)   78.13                80
 12/23/2014   22:19:28   (   0.07,-135.38) (   0.90,-131.54)  437.85                80
 12/25/2014   10:38:34   (  -0.08,-135.41) (   0.24,-136.81)  159.87                80
 12/26/2014   10:22:28   (  -0.08,-135.40) (  -0.76,-132.28)  355.57                80