Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 12 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/29/2012   10:41:10   (  -0.09,-135.45) (   0.88,-139.71)  486.30                80
 12/30/2012   10:25:06   (  -0.09,-135.43) (  -0.16,-135.18)   29.36                80
 01/01/2013   22:25:37   (   0.09,-135.38) (  -0.02,-135.95)   64.57                80
 01/02/2013   22:09:31   (   0.08,-135.37) (   0.96,-131.41)  450.84                80
 01/04/2013   10:28:39   (  -0.10,-135.37) (   0.22,-136.67)  149.21                80
 01/05/2013   10:12:34   (  -0.09,-135.35) (  -0.82,-132.15)  365.45                80
 01/06/2013   22:31:49   (   0.10,-135.29) (  -0.40,-137.44)  245.80                80
 01/07/2013   22:15:45   (   0.09,-135.26) (   0.64,-132.91)  268.60                80
 01/09/2013   10:34:52   (  -0.09,-135.26) (   0.54,-138.18)  332.37                80
 01/10/2013   10:18:47   (  -0.08,-135.23) (  -0.44,-133.64)  181.29                80