Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 6 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)
 06/09/2013   10:08:04   (  -0.04,-134.92) (  -0.96,-130.74)  475.87                80
 06/10/2013   22:27:21   (   0.06,-134.86) (  -0.18,-136.05)  134.88                80
 06/11/2013   22:11:16   (   0.05,-134.83) (   0.79,-131.51)  378.17                80
 06/13/2013   10:30:23   (  -0.07,-134.77) (   0.38,-136.77)  227.92                80
 06/14/2013   10:14:19   (  -0.06,-134.73) (  -0.65,-132.24)  284.56                80
 06/15/2013   22:33:35   (   0.08,-134.66) (  -0.54,-137.54)  327.71                80
 06/16/2013   22:17:30   (   0.07,-134.62) (   0.43,-133.00)  184.65                80
 06/18/2013   10:36:37   (  -0.09,-134.56) (   0.74,-138.26)  422.12                80
 06/19/2013   10:20:33   (  -0.09,-134.51) (  -0.29,-133.73)   89.43                80
 06/21/2013   22:21:03   (   0.10,-134.37) (   0.08,-134.49)   13.79                80