Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 5 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/25/2013   22:27:22   (   0.01,-135.29) (  -0.20,-136.09)   91.89                80
 05/26/2013   22:11:17   (   0.00,-135.27) (   0.82,-131.56)  422.61                80
 05/28/2013   10:30:26   (  -0.02,-135.24) (   0.31,-136.83)  180.96                80
 05/29/2013   10:14:20   (  -0.01,-135.21) (  -0.65,-132.29)  333.13                80
 05/30/2013   22:33:37   (   0.02,-135.17) (  -0.50,-137.60)  276.45                80
 05/31/2013   22:17:32   (   0.01,-135.14) (   0.46,-133.05)  237.74                80
 06/02/2013   10:36:39   (  -0.03,-135.11) (   0.72,-138.32)  365.84                80
 06/03/2013   10:20:35   (  -0.02,-135.08) (  -0.31,-133.79)  147.86                80
 06/04/2013   22:39:51   (   0.04,-135.03) (  -0.89,-139.08)  462.96                80
 06/05/2013   22:23:47   (   0.04,-135.00) (   0.14,-134.55)   50.59                80