Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 2 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/22/2012   22:14:29   (  -0.01,-135.39) (   0.52,-132.98)  274.79                80
 02/24/2012   10:38:58   (   0.01,-135.41) (   0.65,-138.26)  324.29                80
 02/25/2012   10:17:33   (   0.01,-135.43) (  -0.37,-133.73)  193.37                80
 02/26/2012   22:42:10   (  -0.01,-135.45) (  -0.82,-139.04)  408.95                80
 02/27/2012   22:20:45   (  -0.01,-135.46) (   0.20,-134.51)  108.31                80
 02/29/2012   10:42:33   (   0.02,-135.47) (   0.96,-139.79)  491.98                80
 03/01/2012   10:26:29   (   0.02,-135.47) (  -0.06,-135.26)   25.05                80
 03/03/2012   22:29:40   (  -0.02,-135.48) (  -0.14,-136.03)   62.22                80
 03/04/2012   22:08:15   (  -0.02,-135.49) (   0.89,-131.50)  454.09                80
 03/06/2012   10:30:03   (   0.01,-135.48) (   0.32,-136.77)  147.68                80