Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 4 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)
 04/02/2014   10:44:14   (   0.00,-135.28) (   0.70,-138.30)  344.03                80
 04/03/2014   10:22:53   (   0.00,-135.31) (  -0.36,-133.78)  174.30                80
 04/04/2014   22:47:32   (  -0.00,-135.33) (  -0.85,-139.08)  427.58                80
 04/05/2014   22:26:10   (  -0.00,-135.35) (   0.16,-134.55)   90.60                80
 04/08/2014   10:29:19   (   0.00,-135.41) (  -0.04,-135.31)   11.80                80
 04/10/2014   22:35:16   (  -0.01,-135.44) (  -0.15,-136.09)   73.55                80
 04/11/2014   22:13:54   (  -0.00,-135.46) (   0.86,-131.56)  444.00                80
 04/13/2014   10:38:25   (   0.01,-135.49) (   0.31,-136.84)  153.80                80
 04/14/2014   10:17:03   (   0.00,-135.50) (  -0.71,-132.31)  363.27                80