Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 9 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/17/2014   22:36:07   (  -0.32,-135.06) (  -0.54,-135.94)  100.00                80
 09/18/2014   22:20:04   (  -0.33,-135.09) (   0.51,-131.41)  419.90                80
 09/20/2014   10:39:12   (   0.30,-135.14) (   0.66,-136.68)  176.54                80
 09/21/2014   10:23:08   (   0.31,-135.16) (  -0.34,-132.15)  342.91                80
 09/22/2014   22:42:26   (  -0.29,-135.20) (  -0.77,-137.47)  257.88                80
 09/23/2014   22:26:22   (  -0.30,-135.23) (   0.23,-132.93)  261.58                80
 09/25/2014   10:45:30   (   0.28,-135.26) (   0.94,-138.21)  335.27                80
 09/26/2014   10:29:26   (   0.29,-135.28) (  -0.07,-133.67)  183.54                80
 09/27/2014   22:48:43   (  -0.27,-135.30) (  -1.10,-138.98)  419.03                80
 09/28/2014   22:32:38   (  -0.28,-135.32) (  -0.10,-134.45)   99.48                80
 09/30/2014   10:51:47   (   0.25,-135.35) (   1.25,-139.72)  498.56                80