Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 12 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/08/2012   10:35:00   (  -0.07,-135.36) (   0.60,-138.22)  327.01                80
 12/09/2012   10:18:55   (  -0.05,-135.37) (  -0.43,-133.69)  191.28                80
 12/10/2012   22:38:12   (   0.07,-135.38) (  -0.74,-139.00)  412.54                80
 12/11/2012   22:22:07   (   0.06,-135.39) (   0.29,-134.47)  105.55                80
 12/13/2012   10:41:16   (  -0.07,-135.42) (   0.87,-139.75)  492.57                80
 12/14/2012   10:25:10   (  -0.06,-135.42) (  -0.10,-135.20)   24.71                80
 12/16/2012   22:25:42   (   0.07,-135.42) (  -0.04,-135.98)   63.58                80
 12/17/2012   22:09:37   (   0.06,-135.43) (   0.98,-131.45)  453.80                80
 12/19/2012   10:28:46   (  -0.08,-135.45) (   0.18,-136.72)  144.69                80
 12/20/2012   10:12:40   (  -0.07,-135.45) (  -0.79,-132.18)  372.19                80
 12/21/2012   22:31:57   (   0.09,-135.43) (  -0.39,-137.49)  234.44                80