Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 6 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/02/2013   10:36:40   (  -0.03,-135.14) (   0.66,-138.33)  363.15                80
 06/03/2013   10:20:35   (  -0.03,-135.11) (  -0.31,-133.78)  150.65                80
 06/04/2013   22:39:52   (   0.04,-135.05) (  -0.84,-139.09)  460.23                80
 06/05/2013   22:23:47   (   0.04,-135.02) (   0.13,-134.55)   53.50                80
 06/08/2013   10:24:09   (  -0.05,-134.96) (   0.02,-135.28)   37.10                80
 06/09/2013   10:08:04   (  -0.04,-134.92) (  -0.95,-130.74)  475.87                80
 06/10/2013   22:27:21   (   0.06,-134.85) (  -0.18,-136.05)  136.50                80
 06/11/2013   22:11:16   (   0.05,-134.81) (   0.79,-131.51)  376.52                80
 06/13/2013   10:30:23   (  -0.07,-134.77) (   0.38,-136.77)  228.00                80
 06/14/2013   10:14:19   (  -0.06,-134.73) (  -0.65,-132.24)  284.47                80