Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 7 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/02/2013   22:17:28   (   0.14,-135.08) (   0.59,-132.97)  240.13                80
 07/04/2013   10:36:36   (  -0.16,-135.12) (   0.52,-138.24)  355.36                80
 07/05/2013   10:20:30   (  -0.16,-135.15) (  -0.46,-133.70)  164.36                80
 07/06/2013   22:39:47   (   0.18,-135.18) (  -0.70,-139.01)  436.27                80
 07/07/2013   22:23:42   (   0.17,-135.21) (   0.35,-134.48)   83.27                80
 07/10/2013   10:26:45   (  -0.18,-135.26) (  -0.23,-135.21)    7.01                80
 07/12/2013   22:27:16   (   0.19,-135.30) (   0.06,-135.98)   76.40                80
 07/13/2013   22:11:11   (   0.18,-135.32) (   1.05,-131.44)  442.43                80
 07/15/2013   10:30:18   (  -0.20,-135.35) (   0.12,-136.70)  155.01                80
 07/16/2013   10:14:13   (  -0.20,-135.36) (  -0.93,-132.17)  363.15                80