Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 10 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/07/2015   22:14:29   (  -0.25,-134.99) (   0.54,-131.34)  415.90                80
 10/09/2015   10:33:36   (   0.22,-134.94) (   0.61,-136.62)  191.44                80
 10/10/2015   10:17:30   (   0.24,-134.91) (  -0.39,-132.08)  321.98                80
 10/11/2015   22:36:47   (  -0.21,-134.88) (  -0.77,-137.40)  287.21                80
 10/12/2015   22:20:41   (  -0.22,-134.85) (   0.23,-132.86)  226.36                80
 10/14/2015   10:39:47   (   0.20,-134.79) (   0.97,-138.13)  381.02                80
 10/15/2015   10:23:42   (   0.21,-134.76) (  -0.03,-133.60)  131.71                80
 10/16/2015   22:42:58   (  -0.18,-134.70) (  -1.12,-138.91)  479.71                80
 10/17/2015   22:26:53   (  -0.19,-134.67) (  -0.12,-134.38)   32.94                80
 10/20/2015   10:27:14   (   0.18,-134.56) (   0.31,-135.11)   63.37                80
 10/21/2015   10:11:08   (   0.19,-134.51) (  -0.69,-130.58)  448.18                80