Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 7 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)
 07/07/2012   10:22:39   (  -0.25,-135.33) (  -0.25,-135.19)   15.00                80
 07/09/2012   22:25:51   (   0.26,-135.36) (   0.10,-135.98)   71.23                80
 07/10/2012   22:09:47   (   0.25,-135.37) (   1.10,-131.45)  446.49                80
 07/12/2012   10:28:56   (  -0.28,-135.39) (   0.04,-136.73)  152.89                80
 07/13/2012   10:12:52   (  -0.27,-135.40) (  -0.96,-132.20)  364.16                80
 07/14/2012   22:32:09   (   0.29,-135.40) (  -0.20,-137.51)  241.28                80
 07/15/2012   22:16:06   (   0.29,-135.41) (   0.86,-133.00)  275.50                80
 07/17/2012   10:35:14   (  -0.31,-135.42) (   0.36,-138.26)  324.86                80
 07/18/2012   10:19:10   (  -0.30,-135.42) (  -0.69,-133.74)  191.35                80
 07/19/2012   22:38:28   (   0.32,-135.41) (  -0.47,-139.06)  415.54                80
 07/20/2012   22:22:23   (   0.32,-135.41) (   0.52,-134.53)  100.53                80