Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 7 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)
 07/01/2013   22:33:33   (   0.15,-135.04) (  -0.42,-137.50)  281.27                80
 07/02/2013   22:17:28   (   0.14,-135.07) (   0.63,-132.97)  239.00                80
 07/04/2013   10:36:36   (  -0.16,-135.13) (   0.54,-138.24)  354.96                80
 07/05/2013   10:20:31   (  -0.16,-135.15) (  -0.50,-133.71)  164.80                80
 07/06/2013   22:39:47   (   0.18,-135.17) (  -0.66,-139.01)  437.21                80
 07/07/2013   22:23:42   (   0.17,-135.20) (   0.33,-134.47)   82.39                80
 07/10/2013   10:26:45   (  -0.18,-135.27) (  -0.20,-135.21)    6.91                80
 07/12/2013   22:27:16   (   0.19,-135.30) (   0.03,-135.97)   77.06                80
 07/13/2013   22:11:11   (   0.18,-135.32) (   1.08,-131.45)  441.81                80