Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 5 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/09/2012   10:29:41   (   0.00,-135.33) (   0.30,-136.80)  166.39                80
 05/10/2012   10:13:35   (   0.01,-135.35) (  -0.65,-132.25)  352.89                80
 05/11/2012   22:32:51   (   0.00,-135.39) (  -0.47,-137.57)  247.75                80
 05/12/2012   22:16:46   (  -0.01,-135.41) (   0.54,-133.03)  271.52                80
 05/14/2012   10:35:52   (  -0.01,-135.44) (   0.63,-138.30)  326.01                80
 05/15/2012   10:19:47   (  -0.00,-135.46) (  -0.39,-133.77)  192.98                80
 05/16/2012   22:39:02   (   0.02,-135.49) (  -0.78,-139.07)  408.46                80
 05/17/2012   22:22:56   (   0.02,-135.51) (   0.24,-134.54)  110.25                80
 05/19/2012   10:42:03   (  -0.04,-135.53) (   0.92,-139.81)  488.17                80
 05/20/2012   10:25:57   (  -0.03,-135.54) (  -0.10,-135.28)   30.06                80