Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 7 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/04/2013   10:36:35   (  -0.16,-135.12) (   0.56,-138.24)  355.63                80
 07/05/2013   10:20:31   (  -0.16,-135.14) (  -0.49,-133.71)  164.05                80
 07/06/2013   22:39:47   (   0.18,-135.18) (  -0.67,-139.01)  436.74                80
 07/07/2013   22:23:42   (   0.17,-135.20) (   0.31,-134.47)   82.77                80
 07/10/2013   10:26:45   (  -0.18,-135.26) (  -0.19,-135.21)    5.69                80
 07/12/2013   22:27:15   (   0.19,-135.30) (   0.03,-135.97)   77.13                80
 07/13/2013   22:11:11   (   0.18,-135.31) (   1.08,-131.44)  441.65                80
 07/15/2013   10:30:18   (  -0.20,-135.34) (   0.09,-136.71)  155.77                80
 07/16/2013   10:14:13   (  -0.20,-135.35) (  -0.90,-132.17)  362.34                80
 07/17/2013   22:33:29   (   0.22,-135.35) (  -0.24,-137.47)  241.23                80