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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/13/2012   10:41:15   (  -0.08,-135.43) (   0.88,-139.74)  490.82                80
 12/14/2012   10:22:29   (  -0.06,-135.44) (  -0.10,-135.20)   26.84                80
 12/16/2012   22:25:41   (   0.07,-135.45) (  -0.03,-135.98)   59.78                80
 12/17/2012   22:09:36   (   0.06,-135.46) (   0.95,-131.44)  457.95                80
 12/19/2012   10:28:44   (  -0.08,-135.48) (   0.19,-136.71)  140.86                80
 12/20/2012   10:12:39   (  -0.07,-135.48) (  -0.79,-132.17)  376.36                80
 12/21/2012   22:31:55   (   0.09,-135.47) (  -0.37,-137.48)  228.80                80
 12/22/2012   22:15:49   (   0.08,-135.48) (   0.61,-132.94)  288.47                80
 12/24/2012   10:34:58   (  -0.09,-135.49) (   0.52,-138.22)  310.47                80
 12/25/2012   10:18:52   (  -0.08,-135.49) (  -0.47,-133.68)  206.06                80