Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 12 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/17/2014   22:32:06   (   0.07,-135.39) (   0.25,-134.56)   94.38                80
 12/20/2014   10:32:43   (  -0.08,-135.42) (  -0.09,-135.30)   13.66                63
 12/22/2014   22:35:34   (   0.08,-135.37) (  -0.08,-136.07)   80.43                80
 12/23/2014   22:19:27   (   0.07,-135.36) (   0.91,-131.54)  435.45                80
 12/25/2014   10:38:34   (  -0.09,-135.38) (   0.22,-136.81)  163.03                80
 12/26/2014   10:22:27   (  -0.08,-135.37) (  -0.78,-132.28)  352.31                80
 12/27/2014   22:41:40   (   0.09,-135.30) (  -0.43,-137.57)  259.26                80
 12/28/2014   22:25:34   (   0.08,-135.29) (   0.57,-133.04)  256.10                80
 12/30/2014   10:44:40   (  -0.10,-135.31) (   0.55,-138.32)  342.52                80