Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 12 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/28/2013   10:23:18   (  -0.11,-134.78) (  -0.36,-133.74)  118.32                80
 12/29/2013   22:42:35   (   0.12,-134.68) (  -0.89,-139.04)  497.31                80
 12/30/2013   22:26:32   (   0.11,-134.63) (   0.12,-134.50)   13.95                80
 01/02/2014   10:26:58   (  -0.11,-134.52) (   0.08,-135.24)   81.85                80
 01/03/2014   10:10:54   (  -0.10,-134.47) (  -0.93,-130.70)  428.90                80
 01/04/2014   22:30:13   (   0.12,-134.36) (  -0.26,-136.01)  187.88                80
 01/05/2014   22:14:09   (   0.11,-134.30) (   0.75,-131.48)  322.54                80
 01/07/2014   10:33:18   (  -0.12,-134.24) (   0.44,-136.74)  284.70                80
 01/08/2014   10:17:15   (  -0.12,-134.19) (  -0.57,-132.21)  225.64                80
 01/09/2014   22:36:33   (   0.13,-134.07) (  -0.62,-137.51)  391.46                80