Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 7 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/17/2012   10:35:12   (  -0.31,-135.39) (   0.31,-138.26)  326.55                80
 07/18/2012   10:19:07   (  -0.30,-135.39) (  -0.65,-133.72)  189.70                80
 07/19/2012   22:38:24   (   0.32,-135.38) (  -0.47,-139.04)  416.91                80
 07/20/2012   22:22:18   (   0.31,-135.37) (   0.49,-134.50)   99.23                80
 07/23/2012   10:25:22   (  -0.32,-135.37) (  -0.34,-135.25)   13.77                80
 07/25/2012   22:25:54   (   0.33,-135.33) (   0.19,-136.03)   79.01                80
 07/26/2012   22:09:50   (   0.33,-135.32) (   1.21,-131.50)  435.93                80
 07/28/2012   10:28:58   (  -0.35,-135.30) (  -0.04,-136.77)  166.90                80
 07/29/2012   10:12:52   (  -0.35,-135.29) (  -1.01,-132.23)  347.42                80