Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 3 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/28/2013   22:14:22   (  -0.02,-135.12) (   0.44,-133.07)  232.94                80
 03/30/2013   10:36:11   (   0.02,-135.10) (   0.74,-138.35)  370.33                80
 03/31/2013   10:20:07   (   0.02,-135.06) (  -0.29,-133.82)  142.24                80
 04/01/2013   22:42:04   (  -0.02,-134.98) (  -0.96,-139.11)  470.93                80
 04/02/2013   22:20:40   (  -0.02,-134.94) (   0.07,-134.59)   41.22                80
 04/05/2013   10:23:45   (   0.03,-134.87) (   0.12,-135.32)   51.13                80
 04/06/2013   10:07:41   (   0.02,-134.83) (  -0.85,-130.78)  460.89                80
 04/07/2013   22:29:38   (  -0.03,-134.75) (  -0.33,-136.09)  152.83                80
 04/08/2013   22:08:13   (  -0.02,-134.71) (   0.65,-131.55)  358.93                80
 04/10/2013   10:30:03   (   0.02,-134.67) (   0.51,-136.83)  246.27                80