Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 5 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/29/2013   10:14:20   (  -0.01,-135.23) (  -0.65,-132.29)  335.38                80
 05/30/2013   22:33:37   (   0.02,-135.20) (  -0.50,-137.60)  272.86                80
 05/31/2013   22:17:32   (   0.01,-135.18) (   0.47,-133.05)  241.70                80
 06/02/2013   10:36:40   (  -0.03,-135.15) (   0.66,-138.33)  362.09                80
 06/03/2013   10:20:35   (  -0.03,-135.12) (  -0.31,-133.78)  151.90                80
 06/04/2013   22:39:52   (   0.04,-135.07) (  -0.84,-139.09)  457.83                80
 06/05/2013   22:23:47   (   0.04,-135.05) (   0.12,-134.55)   56.15                80
 06/08/2013   10:24:09   (  -0.05,-134.98) (   0.03,-135.28)   34.91                80
 06/09/2013   10:08:05   (  -0.04,-134.94) (  -0.99,-130.75)  478.26                80
 06/10/2013   22:27:21   (   0.06,-134.88) (  -0.21,-136.05)  132.95                80