Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 5 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/14/2013   22:33:35   (  -0.01,-135.43) (  -0.51,-137.63)  251.15                80
 05/15/2013   22:17:31   (  -0.02,-135.42) (   0.50,-133.09)  265.43                80
 05/17/2013   10:36:39   (   0.01,-135.43) (   0.66,-138.37)  334.59                80
 05/18/2013   10:20:35   (   0.01,-135.42) (  -0.35,-133.83)  181.53                80
 05/19/2013   22:39:52   (  -0.00,-135.40) (  -0.81,-139.14)  425.20                80
 05/20/2013   22:23:47   (  -0.01,-135.40) (   0.14,-134.59)   90.70                80
 05/23/2013   10:26:50   (  -0.01,-135.38) (  -0.01,-135.33)    4.73                80
 05/25/2013   22:27:22   (   0.02,-135.32) (  -0.19,-136.10)   89.32                80
 05/26/2013   22:11:18   (   0.01,-135.30) (   0.83,-131.57)  425.35                80