Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 7 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/12/2012   10:28:56   (  -0.27,-135.38) (   0.01,-136.73)  153.39                80
 07/13/2012   10:12:51   (  -0.27,-135.39) (  -1.01,-132.20)  363.72                80
 07/14/2012   22:32:08   (   0.29,-135.38) (  -0.17,-137.51)  242.10                80
 07/15/2012   22:16:03   (   0.29,-135.39) (   0.85,-132.98)  274.75                80
 07/17/2012   10:35:11   (  -0.31,-135.41) (   0.32,-138.26)  324.93                80
 07/18/2012   10:19:07   (  -0.30,-135.41) (  -0.70,-133.73)  191.42                80
 07/19/2012   22:38:23   (   0.32,-135.39) (  -0.47,-139.04)  415.69                80
 07/20/2012   22:22:18   (   0.32,-135.38) (   0.49,-134.50)  100.58                80
 07/22/2012   10:41:26   (  -0.33,-135.40) (   0.67,-139.77)  499.62                80
 07/23/2012   10:25:22   (  -0.33,-135.39) (  -0.36,-135.25)   16.11                80