Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 6 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/04/2013   22:39:52   (   0.05,-135.06) (  -0.87,-139.09)  458.61                80
 06/05/2013   22:23:47   (   0.04,-135.04) (   0.15,-134.55)   55.13                80
 06/08/2013   10:24:10   (  -0.05,-134.96) (  -0.00,-135.29)   36.74                80
 06/09/2013   10:08:04   (  -0.04,-134.92) (  -0.97,-130.74)  476.34                80
 06/10/2013   22:27:21   (   0.06,-134.86) (  -0.23,-136.04)  134.71                80
 06/11/2013   22:11:16   (   0.05,-134.83) (   0.80,-131.51)  378.35                80
 06/13/2013   10:30:24   (  -0.07,-134.78) (   0.38,-136.77)  227.41                80
 06/14/2013   10:14:19   (  -0.06,-134.74) (  -0.65,-132.24)  285.06                80
 06/15/2013   22:33:35   (   0.08,-134.66) (  -0.55,-137.54)  327.51                80
 06/16/2013   22:17:30   (   0.07,-134.62) (   0.42,-133.00)  184.85                80