Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 10 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/16/2015   22:42:58   (  -0.18,-134.71) (  -1.12,-138.91)  478.82                80
 10/17/2015   22:26:53   (  -0.19,-134.67) (  -0.13,-134.38)   33.77                80
 10/20/2015   10:27:14   (   0.18,-134.56) (   0.32,-135.11)   63.70                80
 10/21/2015   10:11:08   (   0.19,-134.51) (  -0.69,-130.58)  447.81                80
 10/22/2015   22:30:25   (  -0.16,-134.44) (  -0.46,-135.89)  164.68                80
 10/23/2015   22:14:19   (  -0.17,-134.40) (   0.54,-131.36)  347.03                80
 10/25/2015   10:33:25   (   0.14,-134.32) (   0.65,-136.63)  262.93                80
 10/26/2015   10:17:20   (   0.16,-134.27) (  -0.35,-132.10)  248.00                80
 10/27/2015   22:36:35   (  -0.13,-134.18) (  -0.85,-137.40)  366.48                80
 10/28/2015   22:20:30   (  -0.14,-134.13) (   0.16,-132.87)  144.56                80