Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 8 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/21/2014   22:41:54   (   0.29,-135.40) (  -0.20,-137.55)  245.00                80
 08/22/2014   22:25:52   (   0.29,-135.39) (   0.83,-133.03)  269.32                80
 08/24/2014   10:45:02   (  -0.29,-135.35) (   0.38,-138.30)  335.97                80
 08/25/2014   10:29:00   (  -0.29,-135.33) (  -0.64,-133.77)  178.07                80
 08/26/2014   22:48:19   (   0.29,-135.32) (  -0.53,-139.08)  428.71                80
 08/27/2014   22:32:16   (   0.29,-135.29) (   0.44,-134.54)   85.12                80
 08/30/2014   10:32:43   (  -0.30,-135.22) (  -0.26,-135.29)    8.03                80
 09/01/2014   22:36:00   (   0.30,-135.16) (   0.11,-136.07)  103.27                80
 09/02/2014   22:19:57   (   0.30,-135.13) (   1.09,-131.54)  409.23                80