Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 12 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/30/2013   22:26:32   (   0.11,-134.63) (   0.15,-134.51)   14.15                80
 01/02/2014   10:26:58   (  -0.11,-134.53) (   0.05,-135.24)   81.48                80
 01/03/2014   10:10:55   (  -0.10,-134.47) (  -0.96,-130.71)  429.24                80
 01/04/2014   22:30:12   (   0.12,-134.36) (  -0.28,-136.00)  187.45                80
 01/05/2014   22:14:09   (   0.11,-134.31) (   0.73,-131.47)  323.05                80
 01/07/2014   10:33:18   (  -0.12,-134.25) (   0.46,-136.74)  284.18                80
 01/08/2014   10:17:14   (  -0.12,-134.19) (  -0.56,-132.21)  226.22                80
 01/09/2014   22:36:33   (   0.13,-134.08) (  -0.62,-137.51)  390.74                80
 01/10/2014   22:20:28   (   0.12,-134.02) (   0.34,-132.97)  119.26                80
 01/12/2014   10:39:38   (  -0.12,-133.95) (   0.84,-138.23)  488.96                80