Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 5 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/26/2013   22:11:17   (   0.00,-135.29) (   0.82,-131.56)  424.38                80
 05/28/2013   10:30:26   (  -0.02,-135.26) (   0.31,-136.83)  179.15                80
 05/29/2013   10:14:20   (  -0.01,-135.23) (  -0.65,-132.29)  335.26                80
 05/30/2013   22:33:37   (   0.02,-135.20) (  -0.50,-137.60)  273.32                80
 05/31/2013   22:17:32   (   0.01,-135.17) (   0.47,-133.05)  241.24                80
 06/02/2013   10:36:40   (  -0.03,-135.15) (   0.65,-138.33)  362.20                80
 06/03/2013   10:20:35   (  -0.02,-135.12) (  -0.31,-133.79)  151.83                80
 06/04/2013   22:39:51   (   0.04,-135.07) (  -0.89,-139.08)  458.13                80
 06/05/2013   22:23:47   (   0.04,-135.04) (   0.14,-134.55)   55.80                80
 06/08/2013   10:24:09   (  -0.05,-134.98) (   0.00,-135.29)   34.83                80