Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 9 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/09/2014   10:45:19   (   0.35,-134.76) (   1.10,-138.17)  388.30                80
 09/10/2014   10:29:15   (   0.36,-134.79) (   0.11,-133.63)  131.85                80
 09/11/2014   22:48:35   (  -0.34,-134.84) (  -1.28,-138.94)  468.02                80
 09/12/2014   22:32:32   (  -0.35,-134.88) (  -0.24,-134.42)   51.97                80
 09/15/2014   10:35:40   (   0.34,-134.96) (   0.36,-135.17)   23.80                80
 09/16/2014   10:16:57   (   0.34,-134.99) (  -0.63,-130.64)  495.82                80
 09/17/2014   22:36:16   (  -0.32,-135.03) (  -0.53,-135.95)  105.40                80
 09/18/2014   22:20:12   (  -0.33,-135.05) (   0.46,-131.42)  413.95                80
 09/20/2014   10:39:24   (   0.31,-135.10) (   0.64,-136.70)  182.04                80
 09/21/2014   10:23:20   (   0.31,-135.13) (  -0.36,-132.17)  337.01                80