Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 2 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/19/2013   22:07:27   (   0.04,-135.17) (   0.90,-131.49)  421.06                80
 02/21/2013   10:31:57   (  -0.03,-135.26) (   0.28,-136.76)  170.10                80
 02/22/2013   10:10:32   (  -0.03,-135.28) (  -0.69,-132.22)  348.22                80
 02/23/2013   22:35:11   (   0.02,-135.25) (  -0.47,-137.54)  259.41                80
 02/24/2013   22:13:46   (   0.02,-135.27) (   0.51,-133.00)  258.61                80
 02/26/2013   10:38:15   (  -0.02,-135.35) (   0.65,-138.27)  333.53                80
 02/27/2013   10:16:52   (  -0.02,-135.37) (  -0.38,-133.75)  184.06                80
 02/28/2013   22:41:29   (   0.02,-135.33) (  -0.82,-139.05)  424.71                80
 03/01/2013   22:20:06   (   0.02,-135.34) (   0.23,-134.53)   92.41                80
 03/04/2013   10:23:11   (  -0.02,-135.40) (  -0.06,-135.27)   15.44                80